Independent Β· sells nothing Β· takes no vendor money Β· re-checked daily
Check your peptide supplier before you buy
The Peptide Watch is an independent UK watchdog that checks whether research-peptide sellers publish their own verifiable Janoshik certificate of analysis. Of 326 active UK vendors audited as of 2 August 2026, only 30 (9%) pass this check and 296 do not.
Type any UK peptide seller and get an instant verdict on whether it holds up.
326active UK vendors
(from 428 sites audited)
(from 428 sites audited)
30independently tested
296on the watch list
π Most-checked UK vendors this week: β
Lab77Peptides reviewπ© BioSupply UK reviewβ
Incline Peps reviewβ
Peptology Labs reviewπ© Lucid Peptides reviewπ© Nilah Labs reviewThe vendor pages UK buyers are checking most on Google right now. β
publishes a verified own-name COA Β· π© on the watch list.
π Key finding: just 9% of active UK research-peptide sellers (30 of 326) publish their own verifiable independent lab certificate. The other 91%, 296 sellers, show none, a borrowed one, a self-made one, or one you can't check.
The 30 whose testing you can verify, newest certificate first: Incline Peps, Lab77Peptides, Peptology Labs, Biohacklondon, Velonix Labs, Peptide Biosciences, Liverpool Advanced Biosciences (LAB.LTD), Grey Matter Peptides, Peptifyuk, Biohackpeptides, Peptideprime, Momentumpeptides, Peptidesresearch, Reta24, Intel Peptides, Phoenixbiolabs, Bodylab Store, Unionbiolabs, Ck Peptides, Xlpeptides, Ascendpeptidesuk, Regenix Peptides, Wolverinepeptides, Tested Peptides, Thoroughbredlabs, Britpeptides, BuyRetatrutide, Kensingtonlabs, Imperialpeptides, Simplypeptides. See each with its verify link →
We open the certificate each UK seller publishes, check who actually tested it and whose name is on it, and tell you plainly whether it stands up. Search any supplier above, or browse the full lists below.
Last updated 2 August 2026 Β· every UK research-peptide retailer Β· re-checked daily
There is no peptide-testing lab in England, so how is everyone "testing"?
An untested vial could be the wrong compound, a fraction of the stated dose, or contaminated with heavy metals or endotoxins, and price, packaging and a slick website prove none of it. Which is why testing matters, and where it gets awkward. Every genuine certificate in this audit was issued abroad, by Janoshik in Prague, or Analiza in Poland. Not one verified report came from a UK laboratory. So when a British shop says its peptides are checked by an "accredited UK lab" it never names, one question has an awkward answer: which lab? There isn't one. The vendors that genuinely test send a sample to Janoshik and show you the verifiable result; an unnamed "UK lab" usually means nothing was independently tested at all.
You can watch it being invented. Take ukpeptides.org: it credits its testing to a lab called "Chromate Analytics." Search for it and you find no website, no listing, no independent trace anywhere, the "lab" exists only as a name on this seller's own documents. A made-up lab is not testing; it is theatre.
What this can, and can't, tell you
Be clear about what any site like this can do. No website, including The Peptide Watch, can prove what is actually in the vial that arrives at your door. That would take independently testing the exact unit you receive, and no document can stand in for it. What we can do is judge the evidence a seller puts in front of you: whether a real independent laboratory tested it, whether the certificate names the seller itself, and whether you can verify it. Even a flawless certificate only proves a sample was tested once, not that your batch matches it. So treat The Peptide Watch as the strongest paper-trail filter available: a way to move from guesswork to informed scepticism, weighed alongside independent testing and consistent results over time, not a guarantee.
Independently tested: vendors with their own verifiable Janoshik certificate (30)
Ranked by most recent certificate. These are the only UK vendors whose testing names them as the client and can be verified on Janoshik's website. Re-scanned daily, so a newer batch moves a vendor up. Click the lab name to open that vendor's live certificate check. Price compares each vendor's BPC-157 cost per mg with the market average; cheaper does not mean better tested.
| # | Vendor | Lab Β· verify | Latest COA | COA age | Price vs market |
|---|---|---|---|---|---|
| 1 | Incline Peps inclinepeps.co.uk | Janoshik β | Jul 2026 | 1 mo | 17% below avg |
| 2 | Lab77Peptides lab77peptides.co.uk | Janoshik β | Jun 2026 | 2 mo | 17% below avg |
| 3 | Peptology Labs peptologylabs.uk | Janoshik β | Jun 2026 | 2 mo | market avg |
| 4 | Biohacklondon biohacklondon.com | Janoshik β | Jun 2026 | 2 mo | n/a |
| 5 | Velonix Labs velonixlabs.co.uk | Janoshik β | Jun 2026 | 2 mo | n/a |
| 6 | Peptide Biosciences peptide-biosciences.com | Janoshik β | Jun 2026 | 2 mo | n/a |
| 7 | Liverpool Advanced Biosciences (LAB.LTD) lab.ltd | Janoshik β | Jun 2026 | 2 mo | n/a |
| 8 | Grey Matter Peptides greymatterpeptides.co.uk | Janoshik β | Jun 2026 | 2 mo | n/a |
| 9 | Peptifyuk peptifyuk.com | Janoshik β | May 2026 | 3 mo | 10% below avg |
| 10 | Biohackpeptides biohackpeptides.co.uk | Janoshik β | May 2026 | 3 mo | 17% below avg |
| 11 | Peptideprime peptideprime.co.uk | Janoshik β | May 2026 | 3 mo | 40% below avg |
| 12 | Momentumpeptides momentumpeptides.com | Janoshik β | May 2026 | 3 mo | 20% above avg |
| 13 | Peptidesresearch peptidesresearch.uk | Janoshik β | May 2026 | 3 mo | market avg |
| 14 | Reta24 reta24.co.uk | Janoshik β | May 2026 | 3 mo | n/a |
| 15 | Intel Peptides intelpeptides.com | Janoshik β | May 2026 | 3 mo | n/a |
| 16 | Phoenixbiolabs phoenixbiolabs.net | Janoshik β | Apr 2026 | 4 mo | 50% below avg |
| 17 | Bodylab Store bodylabstore.co.uk | Janoshik β | Apr 2026 | 4 mo | n/a |
| 18 | Unionbiolabs unionbiolabs.com | Janoshik β | Apr 2026 | 4 mo | market avg |
| 19 | Ck Peptides ck-peptides.com | Janoshik β | Mar 2026 | 5 mo | 20% below avg |
| 20 | Xlpeptides xlpeptides.com | Janoshik β | Mar 2026 | 5 mo | 7% below avg |
| 21 | Ascendpeptidesuk ascendpeptidesuk.com | Janoshik β | Mar 2026 | 5 mo | market avg |
| 22 | Regenix Peptides regenix-peptides.co.uk | Janoshik β | Mar 2026 | 5 mo | market avg |
| 23 | Wolverinepeptides wolverinepeptides.co.uk | Janoshik β | Feb 2026 | 6 mo | n/a |
| 24 | Tested Peptides testedpeptides.co.uk | Janoshik β | Jan 2026 | 7 mo | n/a |
| 25 | Thoroughbredlabs thoroughbredlabs.co.uk | Janoshik β | Sep 2025 | 11 mo | 10% above avg |
| 26 | Britpeptides britpeptides.co.uk | Janoshik β | Sep 2025 | 11 mo | n/a |
| 27 | BuyRetatrutide buyretatrutide.net | Janoshik β | Sep 2025 | 11 mo | n/a |
| 28 | Kensingtonlabs kensingtonlabs.co.uk | Janoshik β | Jul 2025 | 13 mo | market avg |
| 29 | Imperialpeptides imperialpeptides.co.uk | Janoshik β | 2025-2026 | n/a | market avg |
| 30 | Simplypeptides simplypeptides.co.uk | Janoshik β | various | n/a | 20% below avg |
The independently-tested vendors, in detail
A short, factual profile of each independently-verified vendor, what its Janoshik certificate shows and why it qualifies. Each is checked in the vendor's own name and verifiable on Janoshik's website.
1. Incline Peps inclinepeps.co.uk
Incline Peps (inclinepeps.co.uk) publishes its own Janoshik certificate of analysis, the report names Incline Peps as the client, so it covers the stock Incline Peps actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Jul 2026. Incline Peps is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard. It holds the most recent verified certificate in this index, so it sorts first in a list ranked by certificate date.
2. Lab77Peptides lab77peptides.co.uk
Lab77 Peptides publishes its own-name Janoshik certificate, a report dated June 2026 that names Lab77Peptides as the client and can be verified on Janoshik's website.
3. Peptology Labs peptologylabs.uk
Peptology Labs commissions its own Janoshik testing in the name Peptology Labs Ltd, including a retatrutide 30mg blind test at 99.380% (task #194941, analysed 29 June 2026). 25 of its 39 listed products carry a finished own-Janoshik COA; the remaining 14 show a 'verification in progress' status.
4. Biohacklondon biohacklondon.com
Biohacklondon (biohacklondon.com) publishes its own Janoshik certificate of analysis, the report names Biohacklondon as the client, so it covers the stock Biohacklondon actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Jun 2026. Biohacklondon is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
5. Velonix Labs velonixlabs.co.uk
Velonix Labs publishes its own Janoshik certificates, for example test #193734 (GHK-Cu 100mg, analysis 23 June 2026), which names Velonix Labs as the client and velonixlabs.co.uk as the manufacturer, batch VLX, at 99.644% purity, verifiable on Janoshik's website with the key GJ7KE6CC1HJB. (Its other published certificates are for GLP-1 compounds, which this index does not list.)
6. Peptide Biosciences peptide-biosciences.com
Peptide Biosciences (peptide-biosciences.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated Jun 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
7. Liverpool Advanced Biosciences (LAB.LTD) lab.ltd
Liverpool Advanced Biosciences (LAB.LTD) (lab.ltd) publishes its own Janoshik certificate of analysis, the report names Liverpool Advanced Biosciences (LAB.LTD) as the client, so it covers the stock Liverpool Advanced Biosciences (LAB.LTD) actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Jun 2026. Liverpool Advanced Biosciences (LAB.LTD) is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
8. Grey Matter Peptides greymatterpeptides.co.uk
Among UK research-peptide suppliers, Grey Matter Peptides (greymatterpeptides.co.uk) is independently verified: it commissions its own testing from Janoshik Analytical, with Grey Matter Peptides named as the client and a unique code that can be confirmed on janoshik.com. Its most recent certificate in its own name is dated Jun 2026.
9. Peptifyuk peptifyuk.com
Peptifyuk (peptifyuk.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated May 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
10. Biohackpeptides biohackpeptides.co.uk
Biohack Peptides holds its own Janoshik certificates, for example test #162903 (BPC-157, 12 May 2026), which names BiohackPeptides.co.uk as the client and is verifiable on Janoshik's website.
11. Peptideprime peptideprime.co.uk
Peptide Prime commissions its own Janoshik testing: its lab-results pages show reports such as #151111-#151116 (May 2026) naming Peptide Prime as the client, with purities around 99.6-99.8%.
12. Momentumpeptides momentumpeptides.com
Momentumpeptides (momentumpeptides.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated May 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
13. Peptidesresearch peptidesresearch.uk
Peptidesresearch (peptidesresearch.uk) publishes its own Janoshik certificate of analysis, the report names Peptidesresearch as the client, so it covers the stock Peptidesresearch actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated May 2026. Peptidesresearch is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
14. Reta24 reta24.co.uk
Among UK research-peptide suppliers, Reta24 (reta24.co.uk) is independently verified: it commissions its own testing from Janoshik Analytical, with Reta24 named as the client and a unique code that can be confirmed on janoshik.com. Its most recent certificate in its own name is dated May 2026.
15. Intel Peptides intelpeptides.com
Intel Peptides (intelpeptides.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated May 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
16. Phoenixbiolabs phoenixbiolabs.net
Phoenixbiolabs (phoenixbiolabs.net) publishes its own Janoshik certificate of analysis, the report names Phoenixbiolabs as the client, so it covers the stock Phoenixbiolabs actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Apr 2026. Phoenixbiolabs is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
17. Bodylab Store bodylabstore.co.uk
Bodylab Store publishes its own Janoshik certificate, test #150821 (BPC-157, 17 April 2026) reports 99.4% purity and names Bodylab Store as the client (verification key VUNS4KWPCKSY). It also publishes Analiza BiaΕek reports for other products.
18. Unionbiolabs unionbiolabs.com
Unionbiolabs (unionbiolabs.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated Apr 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
19. Ck Peptides ck-peptides.com
Ck Peptides (ck-peptides.com) publishes its own Janoshik certificate of analysis, the report names Ck Peptides as the client, so it covers the stock Ck Peptides actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Mar 2026. Ck Peptides is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
20. Xlpeptides xlpeptides.com
Among UK research-peptide suppliers, Xlpeptides (xlpeptides.com) is independently verified: it commissions its own testing from Janoshik Analytical, with Xlpeptides named as the client and a unique code that can be confirmed on janoshik.com. Its most recent certificate in its own name is dated Mar 2026.
21. Ascendpeptidesuk ascendpeptidesuk.com
Ascendpeptidesuk (ascendpeptidesuk.com) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated Mar 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
22. Regenix Peptides regenix-peptides.co.uk
Regenix Peptides (regenix-peptides.co.uk) publishes its own Janoshik certificate of analysis, the report names Regenix Peptides as the client, so it covers the stock Regenix Peptides actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Mar 2026. Regenix Peptides is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
23. Wolverinepeptides wolverinepeptides.co.uk
Among UK research-peptide suppliers, Wolverinepeptides (wolverinepeptides.co.uk) is independently verified: it commissions its own testing from Janoshik Analytical, with Wolverinepeptides named as the client and a unique code that can be confirmed on janoshik.com. Its most recent certificate in its own name is dated Feb 2026.
24. Tested Peptides testedpeptides.co.uk
Tested Peptides (testedpeptides.co.uk) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated Jan 2026. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
25. Thoroughbredlabs thoroughbredlabs.co.uk
Thoroughbredlabs (thoroughbredlabs.co.uk) publishes its own Janoshik certificate of analysis, the report names Thoroughbredlabs as the client, so it covers the stock Thoroughbredlabs actually sells, and it can be checked on Janoshik's website. Its most recent certificate in its own name is dated Sep 2025. Thoroughbredlabs is one of only 30 UK research-peptide vendors, out of 428 audited, that meet this standard.
26. Britpeptides britpeptides.co.uk
Brit Peptides publishes its own Janoshik certificate, for example test #81234 (Selank, 99.4%), which names Britpeptides as the client and carries verification key YFAZZVHC4TN7. Its latest report dates to autumn 2025, genuine, but older.
27. BuyRetatrutide buyretatrutide.net
BuyRetatrutide (buyretatrutide.net) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. Its most recent certificate in its own name is dated Sep 2025. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
28. Kensingtonlabs kensingtonlabs.co.uk
Kensington Labs publishes its own Janoshik certificates, for example test #70793, naming Kensington Labs as both client and manufacturer, verifiable with key GBCLIHVV6XW3. It carries 30+ Janoshik reports; the most recent certificate we verified dates to July 2025, genuine, but older.
29. Imperialpeptides imperialpeptides.co.uk
Imperial Peptides publishes its own Janoshik certificates, for example Janoshik test #150394 (BPC-157, ordered 21 April 2026) reports 99.923% purity and names Imperial Peptides UK as the client, with a live verification link on Janoshik's site.
30. Simplypeptides simplypeptides.co.uk
Simplypeptides (simplypeptides.co.uk) is one of the 30 UK research-peptide vendors with a verifiable own-name Janoshik COA. It publishes its own Janoshik certificates, in its own name, across several batches. Because every Janoshik report carries a code checkable on janoshik.com, the purity result cannot be faked or edited.
πΈ The hidden networks: many "rival" shops are one operator
Shopping around feels safe, until the "other" shops turn out to be the same person. These storefronts look independent but share a registered address, a parent company, or the same tracking pixel, so a buyer comparing them is comparing one operator to itself. 12 clusters are visible in the public record, the largest spanning 9 brands from a single address.
9 brands Β· one operator
aurapeptidesuk.combiopeptidesuk.comjeopeptidesuk.co.ukonlinepeptidesuk.compeptidesuk.co.ukpeptidesuk.compurepeptidesuk.compurepeptidesuk.nettridentpeptidesuk.com
π all registered to one address, 54a Tyler Avenue, Loughborough
4 brands Β· one operator
π registered to the same address, 195-197 Wood Street, London E17
2 brands Β· one operator
π a shared Facebook pixel, Google Analytics tag, WhatsApp number and contact emails
2 brands Β· one operator
π the same registered UK company, Research Sciences Ltd (no. 16704368), formerly Imperial Peptides Ltd / Imperial Sciences Ltd
2 brands Β· one operator
π the same registered address (82a James Carter Road); now Evo-Max Ltd and Bio Pulse Prime Ltd
2 brands Β· one operator
π a shared Facebook tracking pixel (same operator)
2 brands Β· one operator
nupex.co.ukresearchscientific.co.uk
π both are Research Scientific Ltd (Companies House 16181281)
2 brands Β· one operator
π the same company, Midshire Labs Ltd (formerly Regen Peptides Ltd / Regeneration Labs Ltd), same address
2 brands Β· one operator
apex-peptides.co.ukpeptideuk.shop
π both trade as Apex Peptides (shared brand, UK phone, GBP pricing)
2 brands Β· one operator
π both are Axiom Research Peptides Ltd (Companies House 17240005)
2 brands Β· one operator
π shares 82/82a James Carter Road, Mildenhall IP28 7DE with Prestige Peptides (and New Wave at 84)
β Read the full hidden-networks report
Watch list: active sellers without a verifiable Janoshik COA (296)
Real UK peptide shops, but none publish a certificate that can be verified in their own name. Each entry states the observable reason its certificate can't be relied on, open any one's full audit for the teardown. Tap a tag to filter by problem type.
Shows a supplier's certificate, not its own 13
Alphamino the Alphamino site claims 'Where third-party testing is complete, we publish a Certificate of Analysis (COA), often via independent analysis through Janoshik'. The certificate on display names a different company as the client, so it belongs to a supplier's sample rather than this seller's stock. A certificate that names someone else as the client proves a sample from that supplier's line, not the vial you are sent. On the certificate it shows, the client is recorded only as 'Anonymous', not Alphamino.
We opened its Janoshik verify link (task #156960) on Janoshik's own server: the CLIENT and MANUFACTURER are 'utherpeptide.com', its supplier, not Astralabs. Retatrutide 10mg at 99.793%, batch RE10-0501. Astralabs publishes 8 Janoshik links, all with Uther Peptide as the client, the same supplier as omni-peptides.com. This is a borrowed supplier certificate, so it proves the supplier's sample, not this reseller's stock.
Imperialsciences promises 'Each batch is: Independently tested by HPLC; Supplied with a full Certificate of Analysis; Clearly batch-labelled for traceability'. The document behind 'independently tested' was issued to someone else, not to this seller, so it says nothing checkable about the vial you receive. A certificate that names someone else as the client proves a sample from that supplier's line, not the vial you are sent. The client printed on that certificate is its wholesale supplier, not this seller.
πΈ Same operator as imperialpeptides.co.uk, the same registered UK company, Research Sciences Ltd (no. 16704368), formerly Imperial Peptides Ltd / Imperial Sciences Ltd.
King Pharma sells 'laboratory-grade peptide compounds' for research use and, unusually, publishes an open COA library of genuine Janoshik Analytical reports (one, for CJC-1295, verifies as Janoshik test 74431). However, those certificates carry no client name, the sample-submitted-by field is blank, and King Pharma's own page states products are 'independently tested and verified by Singapore Hengtai Industrial Co', its manufacturer. A verifiable Janoshik report with no client name is the factory's batch test displayed by the reseller, not a certificate commissioned in King Pharma's own name, so it does not establish that a given vial you receive matches that batch.
Neoviapeptides's product pages read 'Each COA is produced by independent HPLC-MS testing and confirms purity (β₯99%), mass spectrometry results and sequence identity'. The certificate on display names a different company as the client, so it belongs to a supplier's sample rather than this seller's stock. Testing paid for by a supplier says nothing checkable about this seller's own stock. The client printed on that certificate is liyudaily.com (a Chinese factory), not Neoviapeptides.
We opened its Janoshik verify link (task #84742) on Janoshik's own server: the CLIENT and MANUFACTURER are 'beibangan.com', its supplier, not Nova Peptides. A GLOW blend (GHK-Cu, BPC-157, TB-500), Oct 2025. The blend name is Nova's own, but the certificate client is the supplier beibangan.com. This is a borrowed supplier certificate, so it proves the supplier's sample, not this reseller's stock.
We opened its Janoshik verify link (task #109575) on Janoshik's own server: the CLIENT and MANUFACTURER are 'utherpeptide.com', its supplier, not Omni Peptides. Retatrutide 30mg at 99.231%, batch RE30-0208. Omni is one of several resellers displaying Uther Peptide's certificates. This is a borrowed supplier certificate, so it proves the supplier's sample, not this reseller's stock.
Peptidexofficial advertises 'Every compound is verified at two levels: independently by Janoshik (accredited third-party lab) and by our supplier's own accredited laboratory'. The document behind 'accredited lab' was issued to someone else, not to this seller, so it says nothing checkable about the vial you receive. A certificate that names someone else as the client proves a sample from that supplier's line, not the vial you are sent. The client printed on that certificate is InnoPeptide (a US manufacturer), not this seller.
RETA UK publishes a page of Janoshik certificates for its GLP-1 range and invites you to verify them at janoshik.com/verify. We did: one example (Tirzepatide 30mg, batch EGB-0526-TR30, task #148589) is a genuine Janoshik report that verifies on Janoshik's own server. But the client named on every certificate is 'EGB', and every batch code begins 'EGB-', so these are the wholesale supplier's blind-test certificates, not RETA UK's own. A genuine supplier certificate proves the supplier submitted a good vial once; it does not prove the stock this reseller ships you is the same. Add the placeholder registered name 'TEST TRADER LTD' (Companies House 17202698) and unusually low pricing, and this is a dropshipper of EGB stock, not an own-name tested seller.
Raccoonpeptides the Raccoonpeptides site claims 'Our peptides are independently lab-tested for purity using industry-standard methods such as HPLC and mass spectrometry'. The certificate on display names a different company as the client, so it belongs to a supplier's sample rather than this seller's stock. A certificate that names someone else as the client proves a sample from that supplier's line, not the vial you are sent. The client printed on that certificate is Uther Peptide, not Raccoonpeptides. It also runs contact/orders through WhatsApp.
πΈ Same operator as anglopeptides.co.uk, anglopeptides.com, raccoonpeptides.co.uk, registered to the same address, 195-197 Wood Street, London E17.
Regenlabs markets its stock with the line 'We work exclusively with trusted international suppliers who provide high-purity peptides, including third-party batch testing and consistent quality'. The document behind that claim was issued to someone else, not to this seller, so it says nothing checkable about the vial you receive. Testing paid for by a supplier says nothing checkable about this seller's own stock. The certificates on display name a rotating cast of unrelated companies as the client. It also recycles copy/templates shared with other 'brands'.
πΈ Same operator as regenpeptides.co.uk, the same company, Midshire Labs Ltd (formerly Regen Peptides Ltd / Regeneration Labs Ltd), same address.
Regenpeptides shows a genuine Janoshik report to look legitimate, but the certificates on display name a rotating cast of unrelated companies as the client, not Regenpeptides. In other words it has never paid to test its own stock; it has taken a certificate that proves a sample from its supplier's own line, and presents it as proof of what's in the vial it ships. The buyer is shown real-looking science that is, for their purposes, meaningless, there is no link between that certificate and the product they receive.
πΈ Same operator as regenlabs.co.uk, the same company, Midshire Labs Ltd (formerly Regen Peptides Ltd / Regeneration Labs Ltd), same address.
Retatrutide UK sells pre-filled Body Pharm retatrutide and tirzepatide pens (GBP, Royal Mail Special Delivery) and links '3rd Party Verified Testing' to a real Janoshik report (task #106564). We opened it: the Client and Manufacturer are both 'www.bodypharm.me' (its supplier), and the batch code is 'BP_'. So it is displaying its supplier's blind-test certificate, not its own stock. Classic borrowed-COA pattern.
Anonymous / not its own 1
Leolab was treated as Janoshik until the certificate was read properly, the client is 'Anonymous' or another brand, not Leolab, so it is not its own verified test.
Name-drops Janoshik with nothing behind it 7
Bionikpeptides leans on the Janoshik name in its copy, sometimes a paragraph copy-pasted word-for-word across several 'different' shops, but provides no actual certificate, task number or verification link. It is renting Janoshik's reputation without ever having used them in a way you can check. Aggravating: recycles copy/templates shared with other 'brands'.
Corix Research Labs (Corix Research Labs UK Limited, Companies House 15270634, incorporated November 2023, Louth) runs a genuine UK shop selling BPC-157, TB-500, GHK-Cu, AOD-9604 and similar at GBP prices. Its /third-party-testing page names Janoshik Analytical and states every batch is externally tested, but that page is narrative only: it displays no certificate, and the individual product pages, checked directly, show no Janoshik report, no batch identifier and no verification code. A named lab in prose is not the same as a published, verifiable certificate in the seller's own name, so nothing about a given batch can currently be confirmed.
Pepspan Ltd (Companies House 17144153, London) prominently names Janoshik Analytical and shows a 'Janoshik COA Verified' badge, but when we opened its Purity Reports page every single product read 'Current Batch: Pending first shipment, report available upon first batch analysis', with no certificate behind any of them, and the store itself is not trading (every product is 'Notify me', not add-to-cart). So it is a pre-launch site advertising testing it has not yet done. It also prices in euros and ships from an EU warehouse despite the UK registration. If and when it publishes a genuine own-name Janoshik certificate we can verify, we will reassess.
Peptidal (Peptidal Ltd, Companies House 16666664, incorporated August 2025, Newcastle upon Tyne) is a real UK shop selling BPC-157, TB-500, ipamorelin and GHK-Cu at 22 to 26 pounds with Royal Mail delivery. It states 'third-party testing through Janoshik, BPC-157 has been submitted, results to be published shortly', and that in the meantime 'all products can be supplied with manufacturer batch Certificates of Analysis upon request'. So the independent Janoshik testing in Peptidal's own name is not yet published, and the current documentation is the manufacturer's, on request. Worth re-checking once the Janoshik results actually appear.
Polygonpeptides leans on the Janoshik name in its copy, sometimes a paragraph copy-pasted word-for-word across several 'different' shops, but provides no actual certificate, task number or verification link. It is renting Janoshik's reputation without ever having used them in a way you can check. Aggravating: barely a functioning shop.
Purity Peptides (a .clinic domain, but a research-peptide shop rather than a treatment clinic) sells tirzepatide, retatrutide, cagrilintide and other GLP-1 compounds with next-day UK delivery. It brands itself heavily as 'JANOSHIK VERIFIED', says 'every batch is independently analysed by Janoshik Laboratories', and claims '99.8%+ purity guaranteed', yet the same page states the certificate 'is on request', and no certificate, batch identifier or Janoshik verification link is actually published. Prominent lab branding with the evidence held back 'on request' cannot be independently verified. No company number is shown; contact is via [email protected].
Zenic Labs (zeniclabs.co.uk, registered 27 May 2026, no Companies House entry) sells BPC-157, TB-500, CJC-1295, Ipamorelin and more with GBP pricing and next-day UK delivery, and headlines Janoshik as its trust signal ('verify it yourself'). But its /verify and /lab-results pages list nine in-house lot codes all marked 'PENDING, COAs publishing soon', with only a generic janoshik.com link and no per-batch verification. Nothing is currently verifiable. (Oddly, the lot codes read '2024' on a site registered in 2026.) ChatGPT has recommended it as a top UK source despite this.
'Chromate Analytics', unverifiable lab 2
Ukpeptidelab's site states 'Pharmaceutical-grade research peptides, third-party tested before release'. It points to 'Chromate Analytics' as its tester, a laboratory no independent record we can find confirms exists. With no trace of the named lab outside the seller's own pages, its results cannot be checked.
Ukpeptides advertises 'Janoshik Analytical HPLC-UV / MS Aspen Bioanalytics HPLC-UV / MS Chromate Analytics HPLC-UV / MS Featured Compound This Month's Spotlight Retatrutide'. The lab named behind 'HPLC testing' leaves no trace outside this seller's own site, so its results cannot be checked. A tester no independent record can confirm cannot be used to verify a batch.
'Axonis' + reformatted results 1
Bluewellpeptides cites 'Axonis Analytics', a little-known outfit, and, tellingly, re-types the figures into its own house template instead of showing the raw lab report. Once a seller is hand-transcribing 'results', there is nothing independent left to verify. Aggravating: pushes GLP-1 'pens'/weight-loss framing.
Self-submission platform, not a lab 2
Orbitrexpeptide on its own pages Orbitrexpeptide says 'That's why we deliver research-grade peptides with proven purity, precise dosing, and full traceability'. What backs that claim is a self-submission platform, not a lab that independently draws and tests a sample. A platform where sellers submit their own samples is not an independent laboratory and cannot vouch for a batch.
Orbitrexpeptides's 'verification' runs through Finnrick, whose grades cannot be independently verified and whose testing lab is hidden. One test cites TrustPointe (a real analytical lab in Dorr, Michigan), but the vial was self-submitted, so it does not prove routine product quality. Either way, none of this is a verifiable own-name Janoshik certificate.
US lab, weaker method 1
Peakpeptides is tested by Analytical Formulations Inc (US), using UV/Vis spectrophotometry rather than the HPLC/MS standard, off a yahoo.com address. Weaker method, foreign lab, not Janoshik.
US lab, US-operated 1
Biopepstore uses Freedom Diagnostics (US); the operation itself looks US-based. Not Janoshik and not really a UK proposition.
US lab + SARMs shop 1
Peakbody uses MZ Biolabs (US) and is primarily a SARMs/supplement store. Not Janoshik. Aggravating: also sells SARMs.
US verification platform 1
Peptideslabuk routes 'verification' through OptimaLabs (US), not Janoshik.
Own QMS 'head of lab' 1
Peptidesoflondon's certificate is signed off on the seller's own quality form by a single named 'head of laboratory', that's internal QA wearing a lab coat, not an independent lab.
Invents a lab/scheme 2
Nattypeptides markets its stock with the line '99%+ Purity Guaranteed, Or We'll Refund the Product AND the Test'. Behind that claim sits a testing scheme that leaves no trace outside the seller's own pages. A tester that leaves no trace outside the seller's own site cannot confirm a batch. It also pushes GLP-1 'pens'/weight-loss framing.
Peptigenlabs cites a 'lab' or quality 'scheme' we can find no independent record of (e.g. a made-up institute or a self-coined 'guarantee'). Inventing an authority to point at is a step beyond simply having no testing.
Advertises COAs that don't exist 2
Biosynthpeptides builds a whole 'Certificates of Analysis' section to look transparent, but the 'View COA' buttons are dead placeholders or the page is empty. It is performing transparency while delivering none; a researcher who clicks expecting proof gets nothing. Aggravating: recycles copy/templates shared with other 'brands'; pushes GLP-1 'pens'/weight-loss framing.
Platinumpeptides promises 'Supplied with verified purity and accurate labelling, all peptides are for research use only and not for human or veterinary consumption'. For all the mention of that claim, no certificate is shown on the site to check. A certificate advertised but never actually published cannot be inspected or verified.
Self-made certificate 2
Allmypeptides the Allmypeptides site claims 'Every batch HPLC-tested and mass spectrometry verified by accredited UK third-party laboratories'. The certificate it shows carries no lab letterhead and no verification code, only the seller's own branding and typed-in numbers. A document the seller fills in itself is a branded graphic, not independent testing.
Dlpeptides on its own pages Dlpeptides says 'Analytical data derived from independent third-party testing (Janoshik)'. What sits behind 'Janoshik' is a document the shop has made itself, with no independent laboratory issuing it. A document the seller fills in itself is a branded graphic, not independent testing.
Factory's QC sheet, rebranded 4
Axiom Research Peptides Ltd (Companies House 17240005, 71-75 Shelton Street, London) sells BPC-157, CJC-1295 and GHK-Cu with GBP pricing and Royal Mail Tracked 24, supplying 'a COA as supplied by our manufacturer' but naming no independent laboratory. A manufacturer's COA passed through a reseller is not independent verification of the reseller's stock. Companies House shows an ACTIVE PROPOSAL TO STRIKE OFF this company (Axiom Research Peptides Ltd, 17240005), filed roughly six weeks after its May 2026 incorporation, at a Shelton Street formation-agent address.
πΈ Same operator as axiomresearchpeptides.co.uk, both are Axiom Research Peptides Ltd (Companies House 17240005).
Axiom Research Peptides Ltd (Companies House 17240005, London) runs axiomresearchpeptides.co.uk alongside its other domain axiompeptides.co.uk, selling BPC-157, CJC-1295 and GHK-Cu with GBP pricing (from Β£15.99), batch numbers and '99.9% purity' claims, but names no laboratory and publishes no verifiable certificate. Companies House shows an ACTIVE PROPOSAL TO STRIKE OFF this company (Axiom Research Peptides Ltd, 17240005), filed roughly six weeks after its May 2026 incorporation, at a Shelton Street formation-agent address.
πΈ Same operator as axiompeptides.co.uk, both are Axiom Research Peptides Ltd (Companies House 17240005).
Essentialpeptides advertises 'HPLC Analysis High-Performance Liquid Chromatography verifies peptide purity to β₯99%'. What supports 'HPLC testing' is a manufacturer's quality sheet, which speaks to the factory's sample rather than this seller's vial. A factory QC document reused as a certificate proves the factory's sample, not this seller's vial.
Rppeptides tells buyers 'Trusted sourcing Every product we retail comes fully tested, with COA's provided (Certificates of Authority)'. The certificate behind it is the raw-material factory's own QC sheet, not an independent test of what this seller ships. A factory QC document reused as a certificate proves the factory's sample, not this seller's vial.
Grades its own homework (in-house) 10
Chromapeptides's site states 'In-House tested in the United Kingdom'. The testing behind it is done in-house by the company selling the product, with no outside laboratory involved. In-house results carry no outside check, the seller is grading its own homework.
Crownpeptides openly does its testing 'in-house', i.e. the company selling the product also writes the certificate that says the product is good. There is no outside check anywhere in that loop; the purity figure is whatever they decide to print. Calling that a 'Certificate of Analysis' borrows the authority of independent testing while removing the one thing that gives it meaning, independence. Aggravating: runs contact/orders through WhatsApp.
OP Labs (formerly Oxford Peptides) publishes an unusually polished 'Certificate of Analysis Finder': you verify your order email and enter an OP-XXXXX batch number to pull a certificate listing RP-HPLC purity, ESI-MS, Karl Fischer water content, GC-HS residual solvents and LAL endotoxins against ICH-style limits. It looks like serious third-party documentation, but no independent laboratory is named anywhere and no result can be checked on an external lab's own server. The certificates are self-issued in OP Labs' own template and gated behind a customer login, so the analytical numbers remain the seller's own word: a more sophisticated version of grading its own homework, not independent verification.
Oxfordpeptidelabs markets its stock with the line 'Batch Specific COA HPLC reports on all batches with typical 99%+ purity'. It is open that 'HPLC testing' is tested in-house, so the seller is checking its own product rather than an independent lab doing it. In-house results carry no outside check, the seller is grading its own homework.
Oxfordpeptides openly does its testing 'in-house', i.e. the company selling the product also writes the certificate that says the product is good. There is no outside check anywhere in that loop; the purity figure is whatever they decide to print. Calling that a 'Certificate of Analysis' borrows the authority of independent testing while removing the one thing that gives it meaning, independence.
Peptiology openly does its testing 'in-house', i.e. the company selling the product also writes the certificate that says the product is good. There is no outside check anywhere in that loop; the purity figure is whatever they decide to print. Calling that a 'Certificate of Analysis' borrows the authority of independent testing while removing the one thing that gives it meaning, independence.
Pondokpeptides's product pages read 'HPLC and MS verification with Certificate of Analysis available on request'. The testing behind it is done in-house by the company selling the product, with no outside laboratory involved. In-house results carry no outside check, the seller is grading its own homework.
Propeptidesplus openly does its testing 'in-house', i.e. the company selling the product also writes the certificate that says the product is good. There is no outside check anywhere in that loop; the purity figure is whatever they decide to print. Calling that a 'Certificate of Analysis' borrows the authority of independent testing while removing the one thing that gives it meaning, independence.
Receptorchem openly does its testing 'in-house', i.e. the company selling the product also writes the certificate that says the product is good. There is no outside check anywhere in that loop; the purity figure is whatever they decide to print. Calling that a 'Certificate of Analysis' borrows the authority of independent testing while removing the one thing that gives it meaning, independence.
Uk Peptides's site states 'Our peptides are strictly manufactured in a state-of-the-art laboratory, ensuring a purity of >99%'. The testing behind it is done in-house by the company selling the product, with no outside laboratory involved. Testing done by the company selling the product is not independent by definition.
Hides behind an 'accredited UK lab' 16
Aceso Peptides UK Ltd references 'accredited UK laboratories' and displays a sample certificate (batch ACE-001, 99.1% purity), but names no actual laboratory and its site shows placeholder company details ('[UK Business Address Pending]', no registration number), suggesting a very new or thin operation. An unnamed 'accredited lab' is not something you can verify.
Drpeptides's product pages read 'Independent Testing Every batch is independently analysed by a UK-accredited laboratory via HPLC'. It leans on an 'accredited UK laboratory' but never names it, and publishes no certificate to look up. An unnamed accredited lab cannot be looked up, so the accreditation cannot be confirmed.
Drpresearch the Drpresearch site claims 'Independent Testing Every batch is independently analysed by a UK-accredited laboratory via HPLC'. It leans on an 'accredited UK laboratory' but never names it, and publishes no certificate to look up. Accreditation you cannot attribute to a named body is a word doing PR work with nothing checkable behind it.
My Peptides tells buyers 'HPLC verified Independent third-party labs confirm identity and purity by HPLC and mass spectrometry'. It leans on an 'accredited UK laboratory' but never names it, and publishes no certificate to look up. Accreditation you cannot attribute to a named body is a word doing PR work with nothing checkable behind it.
Nexyra Lab (Nexyra Research Ltd, Companies House 17057743, incorporated February 2026, London) sells BPC-157, TB-500, CJC-1295 and similar from 15 pounds with free UK shipping over 75. Its COA hub states 'all testing is conducted by independent accredited laboratories, never in-house' and links its own-branded PDF reports, but it never names Janoshik, Aspen or any specific laboratory, so the certificates cannot be checked against a lab's own verification system. An own-branded PDF that names no issuing lab is not independently verifiable.
Nilah Labs (Nilah Ltd, Companies House 16924398, London) sells GLP-1 blends, GHK-Cu, BPC-157 and more, and unusually publishes the full chromatogram, stating testing is by 'a 3rd party UK lab under UKAS accreditation (ISO/IEC 17025)' with an average 99.1% purity. But it names no specific laboratory, so the accreditation claim cannot be checked. More transparent than most, but still not a verifiable own-name certificate from a named lab.
Peptagenix promises 'Accredited Testing Labs: Ensuring the highest standards in peptide quality'. The 'accredited lab' behind that claim is never identified, so the accreditation cannot be attributed to any real body. Accreditation you cannot attribute to a named body is a word doing PR work with nothing checkable behind it. It also makes absurd corporate claims; pushes GLP-1 'pens'/weight-loss framing.
Peptide Clyde sells a broad UK research-peptide range with free UK shipping over Β£50, claiming products are 'independently verified to β₯99% purity via HPLC, with batch-specific Certificates of Analysis available for download' by 'accredited third-party laboratories,' but names no specific laboratory. The domain peptidesciences-uk.com, which trades on the well-known US 'Peptide Sciences' name, redirects here. No company registration or address is shown.
Peptide Pharma UK (brand 'Peptide Pharma', likely Peptide Pharma UK Limited, Companies House 16743048) sells retatrutide research pens with GBP pricing including UK VAT, UK-based stock and Royal Mail Tracked / DPD dispatch, claiming testing by 'an independent ISO-accredited European laboratory' via HPLC and Mass Spec with a COA included, but names no specific laboratory (and does not name Janoshik), so the certificate cannot be traced.
PeptidesX Ltd sells BPC-157 and Semaglutide among others with GBP pricing and UK dispatch, saying 'every compound is tested at an accredited UK laboratory (ISO 17025) with a batch-specific COA in every order', but names no specific laboratory, so the COA cannot be traced.
PurePerform Peptides sells research peptides as pre-filled pens, claiming they are 'rigorously tested by accredited UK laboratories,' but names no specific laboratory and shows no certificates. Ordering is WhatsApp/Telegram-only behind a 21+ age gate, a higher-risk, contact-only pattern.
Purest Labs Co ('UK Based, Lab Tested') sells BPC-157, TB-500, Ipamorelin, CJC-1295, Retatrutide and Tirzepatide with GBP pricing and UK shipping, saying items are 'independently third-party tested in UK-accredited laboratories', but names no specific laboratory.
Regenixresearch advertises 'Elite research compounds produced under strict control and verified by laboratory COAs for precise, batch-to-batch consistency'. The 'accredited lab' behind that claim is never identified, so the accreditation cannot be attributed to any real body. An unnamed accredited lab cannot be looked up, so the accreditation cannot be confirmed.
Tidelabs's site states 'We have replaced opaque supply chains with rigorous UK testing, compliant documentation, and rapid cold chain logistics'. It leans on an 'accredited UK laboratory' but never names it, and publishes no certificate to look up. An unnamed accredited lab cannot be looked up, so the accreditation cannot be confirmed.
Ukpeptides tells buyers '2 Third-party verified Every batch is sent to an independent accredited lab for HPLC purity and LC-MS identity testing before it's released'. It leans on an 'accredited UK laboratory' but never names it, and publishes no certificate to look up. An unnamed accredited lab cannot be looked up, so the accreditation cannot be confirmed. It also pushes GLP-1 'pens'/weight-loss framing.
Vionexpeptides markets its stock with the line 'Independently, 3rd Party Testing Each batch verified for purity and potency'. The 'accredited lab' behind that claim is never identified, so the accreditation cannot be attributed to any real body. Accreditation you cannot attribute to a named body is a word doing PR work with nothing checkable behind it.
'COA on request', nothing published 19
Adoniselitepeptides's site states '3rd Party HPLC Tested Scientifically verified 98% Purity Guaranteed'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. A certificate you can only see after paying cannot inform the decision to buy.
Ajresearchlabs's site states 'Our peptides are produced to high-purity research standards, typically exceeding 99% purity where applicable'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. An assurance designed to arrive only after the sale is not something a buyer can test in advance.
Apex Peptides (peptideuk.shop) sells peptides and pen kits with GBP pricing, a UK phone line (07957 269835) and 3 to 5 day UK shipping, saying items are 'tested by third-party laboratories with COAs available upon request', but names no laboratory. Sibling site apex-peptides.co.uk trades under the same brand.
πΈ Same operator as apex-peptides.co.uk, both trade as Apex Peptides (shared brand, UK phone, GBP pricing).
Aurapeptidesuk promises 'All peptides are β₯99% pure (unless stated otherwise) and undergo HPLC and Mass Spectrometry testing to ensure identity and purity'. Nothing is published up front: the certificate behind 'HPLC testing' is promised on request rather than shown, from a lab that is never named. A certificate you can only see after paying cannot inform the decision to buy.
πΈ Same operator as biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Britannia Research Biopeptides Ltd (Companies House 17206811, registered in England and Wales) sells research compounds (including BPC-157) with GBP pricing, a UK mobile and WhatsApp, behind an 18+ age gate. It offers a 'Certificate of Analysis and batch documentation alongside your order confirmation' on request, but names no laboratory, so the COA cannot be independently verified.
Britishpeptides's site states 'Every batch independently verified to 99%+ HPLC purity with full certificate of analysis available on request'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. A certificate you can only see after paying cannot inform the decision to buy.
EZ Peptides sells 23+ research peptides 'for advanced laboratory research', dispatched from a UK facility within 24 hours. It states products 'undergo rigorous HPLC testing' and that 'Certificates of Analysis [are] available upon request to verify quality and purity', but no independent laboratory is named and no certificate is published, so there is nothing to check before ordering. No company registration is shown.
Evolve Labs UK sells retatrutide, tirzepatide, BPC-157, TB-500, GHK-Cu and NAD+ with UK-wide tracked delivery at GBP prices. Its testing claim is 'independently tested via HPLC-MS analysis' with a 'Certificate of Analysis available on request for all compounds', but no independent laboratory is named and no certificate is published, so a buyer has nothing to check before ordering. No company registration is shown on the site.
NI Peptides research Peptides NI (researchpeptidesni.co.uk redirects here; trades as 'NI Peptides Ltd', nearest register match Research Peptides NI Limited, Companies House NI735658) sells 5-Amino-1MQ, AOD-9604, BPC-157 and bac water with GBP pricing, shipping across the UK and Ireland, with 'COAs available on request by email' but no laboratory named.
Onvay Labs (onvaylabs.co.uk; Onvay Ltd, Companies House 17224833, incorporated 17 May 2026 at 66 Paul Street, London EC2A 4NA, a virtual-office address shared with other listed vendors) sells retatrutide, BPC-157, GHK-Cu and more with GBP pricing. It claims 'every batch independently tested by Janoshik, greater than 99%', but its Lab Reports page is COA-on-request: certificates are 'shared privately' by email with your order number, justified by the claim that public reports 'get copied and tampered with'. No verify.janoshik.com link exists, so the client named on any certificate cannot be checked. Both company and domain are brand-new. ChatGPT has recommended it as a top UK source despite this.
Optimal Lab names Janoshik, but only as 'our supplier Janoshik', its supplier's testing, not a certificate commissioned in Optimal Lab's own name, and per-lot certificates are 'available on request' rather than published. No purity figures and no company registration are shown, so nothing about its stock can be independently verified. Newport, South Wales; sells BPC-157, TB-500, retatrutide and NAD+ with UK Royal Mail Tracked 24 dispatch.
Peptidesuk the Peptidesuk site claims 'All PeptidesUK research peptides are HPLC-tested for purity'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. An assurance designed to arrive only after the sale is not something a buyer can test in advance.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Precisionresearchuk tells buyers 'Batch-specific Certificates of Analysis (COA)'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. A certificate you can only see after paying cannot inform the decision to buy.
Prettypeptide advertises 'Selected products undergo independent third-party lab testing to verify claims such as ingredient percentage, safety compliance, and purity checks'. Nothing is published up front: the certificate behind that claim is promised on request rather than shown, from a lab that is never named. An assurance designed to arrive only after the sale is not something a buyer can test in advance.
Prime Peptides tells buyers 'Selected products undergo independent third-party lab testing to verify claims such as ingredient percentage, safety compliance, and purity checks'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. An assurance designed to arrive only after the sale is not something a buyer can test in advance. It also pushes GLP-1 'pens'/weight-loss framing.
Research Peptide (singular, distinct from the separately-listed researchpeptides.co.uk) sells BPC-157, TB-500, MOTS-c, retatrutide and blends as '99% Pure British Peptides,' but its testing is described as '99%+ HPLC purity, full COA available on request,' with no laboratory named and nothing published on the site to verify. 'On request' is not published proof, and the near-identical name to another UK shop is itself a source of confusion buyers should note.
Stratfordpeptides the Stratfordpeptides site claims 'We also have all batches independently third-party lab tested for verification of purity and potency, and we can provide Certificates of Analysis'. The certificate is only offered on request, after the sale, and no laboratory is named, so there is nothing to inspect before buying. A certificate you can only see after paying cannot inform the decision to buy.
Truepeptidelabs markets its stock with the line 'third-party HPLC and LC-MS testing and lot-specific Certificates of Analysis'. Nothing is published up front: the certificate behind 'HPLC testing' is promised on request rather than shown, from a lab that is never named. An assurance designed to arrive only after the sale is not something a buyer can test in advance.
UK Peptides Store (ukpeptidesstore.uk, distinct from the single-s ukpeptidestore.uk) is a UK WooCommerce retailer with GBP pricing (it even resells an 'Alluvi Retatrutide 40mg' at Β£199), 48-hour UK dispatch and a UK WhatsApp line. It sells research peptides plus SARMs and oral/injectable steroids, uses some telehealth-style 'compounded' language, and offers a COA on request but names no laboratory. A broad, higher-risk product mix.
No named lab, nothing to verify 204
AAA Peptides (Leeds) sells research peptides claiming 99% purity, but names no testing laboratory, shows no prices on-site, and its checkout is a contact form that emails a payment link rather than standard e-commerce. Higher-caution profile.
Accurapeptides's site states 'Purity: β₯ 98% (HPLC verified)'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Adaptog Research sells peptides and GLP-1 pens (including retatrutide) at premium prices, claiming products are '100% lab tested, verifiable through the unique QR code on every product' with HPLC/LC-MS, but names no independent laboratory (no Janoshik or Aspen). A QR that resolves to the seller's own record is not third-party verification.
Advanced Peptides UK (a trading name of B.T.Norman Group Ltd, Companies House 16142816, Belmont Business Park, Durham DH1 1TW) sells peptide vials, pens and bundles with GBP pricing and next-day UK dispatch, supplying a COA 'where applicable' but naming no laboratory. A banner notes the shop is in a testing phase where orders are refunded, so treat as newly launched.
Aegis Peptides is a small, GLP-1-led UK shop (Retatrutide, GHK-Cu, BPC-157) selling in GBP with 'FREE UK TRACKED 24 DELIVERY'. It advertises 'Third-Party Lab Tested' and a '99%+ Purity Guaranteed' badge and offers a 'VIEW RETA COA' link, but the homepage never names the laboratory behind the testing, so a buyer cannot independently verify who tested what. The only contact address shown, 124 City Rd, London EC1V 2NX, is a well-known virtual-office address rather than a trading premises, a weak trust signal for a shop asking you to take its purity claims on faith.
Alpha Peptides's site states 'CoA Reports Supporting documentation may be available for selected products'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Alveque Peptides (a trading name of RS Trilla Holdings Ltd, 128 City Road, London EC1V 2NX) sells BPC-157, GHK-Cu and IGF1-LR3 vials with GBP pricing and 'Based in the UK' branding, claiming products are '3rd-party lab tested, β₯99% HPLC', but names no laboratory and publishes no verifiable certificate.
Aminoh Peptides Ltd (Companies House 17020404) sells BPC-157, DSIP, Kisspeptin and Selank with GBP pricing, UK/USA/NI shipping and same-day dispatch before 2pm, claiming testing but naming no laboratory and publishing no verifiable certificate.
Aminopeptides advertises 'Every batch undergoes rigorous, independent third-party testing to guarantee identity, purity, and stability'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
AmpouLabs (AmpouLabs Ltd, Companies House 17138602) is a live UK shop selling retatrutide, BPC-157, TB-500, GHK-Cu and NAD+ at GBP prices with UK dispatch. Its testing claim is that 'every batch is independently analysed' and '3rd party lab tested so results cannot be manipulated', but no independent laboratory is named and no certificate is published for inspection, so a buyer cannot confirm it. The 'results cannot be manipulated' line describes what an independent lab's verification does, without naming one.
Anglopeptides markets its stock with the line 'Supporting product documentation, including Certificates of Analysis (COAs), is provided with applicable orders'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable. It also recycles copy/templates shared with other 'brands'.
πΈ Same operator as anglopeptides.com, raccoonpeptides.co.uk, raccoonpeptides.com, registered to the same address, 195-197 Wood Street, London E17.
Anglopeptides advertises 'Supporting product documentation, including Certificates of Analysis (COAs), is provided with applicable orders'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable. It also recycles copy/templates shared with other 'brands'.
πΈ Same operator as anglopeptides.co.uk, raccoonpeptides.co.uk, raccoonpeptides.com, registered to the same address, 195-197 Wood Street, London E17.
APEPS Supplies Ltd (Companies House 17123301) sells research peptides (alongside some cosmetic/serum products) with GBP pricing, same-day despatch before 4pm and fast UK delivery, claiming '100% Lab Tested', but names no laboratory and publishes no verifiable certificate.
Apex Biolab sells retatrutide (including a 'Reta GLP-3'), bacteriostatic water, SARMs and amino acids at heavy discounts (retatrutide 10mg marked down to about Β£75). Unusually, we found no certificate of analysis, no third-party testing claim and no laboratory named anywhere on the site, not even the generic 'HPLC tested' line most sellers use. The registered company (Companies House 12906549, 2 Crossfell View, Alston CA9 3AP) is older than most reta-forward shops, though the domain itself dates to 2025. No published testing means there is nothing to verify. Its cited company number 12906549 resolves to Pennine Performance Ltd, not Apex Biolab.
APEX Biolabs Limited (Companies House 17207700, Planet Place, Killingworth, Newcastle NE12 6DY) sells Tesamorelin, GHK-Cu and MOTS-c with GBP pricing and free next-day UK delivery over Β£100, with a COA section and 'third party tested' claim, but names no laboratory and publishes no verifiable certificate.
Apex Labs UK ('UK based supplier') sells research peptides with GBP pricing, tracked next-day UK post and a WhatsApp line (07746558103), claiming HPLC/MS testing from an 'ISO-certified UK facility' with 'COAs with every batch', but names no laboratory. Distinct from the Apex Peptides brand.
Apex Receptor (Shopify) sells a SARMs-and-peptides range and says it uses 'blind and independent third-party testing' for identity, purity and concentration, but names no laboratory and surfaces no report numbers. Many items are marked sold out.
Apidem Research (the domain apidempeptides.co.uk redirects here) sells Semax, TB-500, BPC-157, NAD+, KLOW, GLOW and Cagrilintide with GBP pricing and next-working-day UK delivery, but names no testing laboratory and publishes no verifiable certificate.
Arma Peptides sells pre-filled branded research pens (Revytal, Slimerix, BPC-157 and TB-500 kits) with GBP pricing and card/ApplePay/GooglePay/crypto, and hosts a Certificate of Analysis page. But the products are third-party manufacturer brands, so any certificate reflects the manufacturer's sample, not Arma's own stock. No own-name verifiable Janoshik certificate is surfaced.
Axiom Labs UK (a separate operation from Axiom Research Peptides Ltd) is a live UK shop selling Tirzepatide (Β£35), NAD+ (Β£35), HCG, a BPC-157/TB-500 blend (Β£35) and bac water with GBP pricing, UK shipping and WhatsApp contact. It shows COA images but names no laboratory and publishes no verifiable certificate.
Be Better Peptides sells a UK research-peptide range, dispatching 'from within the UK,' and says 'each batch is subject to third-party laboratory testing with certificates of analysis available,' but names no laboratory and shows no company details. Domain registered August 2024.
Bethesda Pharma sells peptides alongside SARMs and nootropics, claiming 'manufactured in the UK' and 'full lab reports available,' but names no testing laboratory and shows no company details. Domain registered February 2025. A hybrid SARMs/peptide shop with an unnamed-lab testing claim.
BioSupply UK bioSupply Group Ltd (Companies House 17152707) sells BPC-157, GHK-Cu, TB-500, Retatrutide and Melanotan at low prices and states 'independently tested for purity, we provide a certificate of analysis with all products,' but names no laboratory, so the certificate cannot be independently checked. Domain registered March 2026.
BioVial sells a broad UK research-peptide range (BPC-157, TB-500, GLP-1s like tirzepatide and retatrutide, Epithalon, SS-31, KPV and more) as kits of 10 vials, and repeats 'HPLC verified every batch, β₯98% purity,' but names no laboratory and publishes no certificate of analysis anywhere on the site, so there is nothing to check that purity claim against. It shows no company name, registration number or address, and it accepts crypto (BTC, ETH, USDT). An unverifiable purity claim from an anonymous, crypto-accepting shop is exactly the profile to be most careful with.
Biolabpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Biolabs's site states 'Batch-specific Certificate of Analysis available'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Biolabshop's product pages read 'Biolab means quality confirmed by testing'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable. It also runs contact/orders through WhatsApp; also sells SARMs.
πΈ Same operator as mybiolabshop.com, a shared Facebook pixel, Google Analytics tag, WhatsApp number and contact emails.
Biolabshopofficial promises 'BioLabShop is a trusted supplier of high-purity research peptides and laboratory compounds'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also sells SARMs.
Biolabshopuk promises 'BioLabShop is a trusted supplier of high-purity research peptides and laboratory compounds'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also sells SARMs.
Bionexis Peptides ('UK Laboratory') sells a broad range and claims 'HPLC & LC-MS verified, COA per batch, β₯99% purity,' but names no laboratory and shows no company details on its homepage. Domain registered January 2026. Until it publishes an own-name certificate from a named independent lab you can verify, the purity figure is its own word.
Bioplexpeptides promises 'All BioPlex Peptides products are manufactured to laboratory-grade standards and come with a Certificate of Analysis (CoA) and HPLC verification'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable. It also sells SARMs; markets to human users, not researchers.
Bioprostore tells buyers 'We focus on providing lab-tested formulations, reliable sourcing, and consistent quality standards for research and educational purposes'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also leans on crypto payment (no buyer protection).
Biotech Peptides UK sells cosmetic peptides, bioregulators and GLP-1 compounds (retatrutide, liraglutide, tesamorelin) in GBP on a .co.uk domain, but the site reads as a clone of the established US brand whose name it borrows: the copy is lifted from Peptide Sciences, the homepage still carries 'Biotech Peptides Canada' headings, and its own About page states the team is 'Based in the United States'. Testing is described only as in-house HPLC and mass spectrometry; no independent laboratory is named and no certificate of analysis is published or verifiable anywhere on the site. The domain was registered in January 2026, six years after the US biotechpeptides.com it is not affiliated with.
Black Country Peptides black Country Peptide's Ltd (Companies House 17206015, 44 Tower Road, Oldbury B69 1NB) sells Semax, retatrutide, tirzepatide and bac water with GBP pricing and fast UK shipping, claiming products are 'third-party tested' at '99.9% purity', but names no laboratory and publishes no verifiable certificate.
Blueprint Peptides is a live UK shop (age-gated) selling standard research-peptide vials (BPC-157 10mg Β£35, Cagrilintide, GHK-Cu, Ipamorelin, Melanotan) with GBP pricing and card/Google Pay. Its product pages carry only chemistry boilerplate (formula, PubChem CID) with no laboratory named and no certificate published; third-party search snippets mention Janoshik testing, but nothing verifiable is surfaced on the site itself.
Body Balance Vitamins is a Bolton-based vitamins shop that also stocks research-peptide pens (retatrutide, GHK-Cu, MT-1, NAD+) with GBP pricing and UK dispatch, but names no laboratory and publishes no verifiable certificate for the peptide lines.
Bonafidepeptides the Bonafidepeptides site claims 'Best Quality Each vial of Sermorelin 5mg is purity-tested and lab verified'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
British Peptide Labs ('shipped from London, UK hub', [email protected]) sells Retatrutide, Tirzepatide, GHK-Cu and MOTS-c with GBP pricing and UK next-day delivery, claiming 'independent third-party mass spectrometry', but names no specific laboratory.
Buy Peptides UK (banner 'EST 2026') sells peptides and SARMs from a claimed UK warehouse and says 'every batch is HPLC tested and the real chromatogram ships with the vial,' but names no independent laboratory. A vendor's own chromatogram is not third-party verification, and the site is brand-new.
Buy Tirzepatides sells Retatrutide and Tirzepatide pens and vials plus BPC-157, TB-500 and NAD+ with GBP pricing and guaranteed next-working-day UK delivery, claiming products are 'third-party HPLC and MS tested', but names no laboratory and publishes no verifiable certificate. Tirzepatide 40mg Β£135; Retatrutide 40mg Β£225.
BuyRetaUK sells GLP-1 compounds (retatrutide, tirzepatide, semaglutide) and says 'every batch is independently tested by third-party labs via HPLC and mass spectrometry,' but names no laboratory and offers no certificate you can verify. The domain was registered on 16 June 2026, only weeks ago, and the trading company, Oxford Research Syndicate Ltd (Companies House 17207898), gives a Barking, Essex address that has nothing to do with the 'Oxford' branding. A brand-new shop moving patented GLP-1 medicines behind an unverifiable testing claim warrants real caution. Its cited company number 17207898 is Oxford Research Syndicate Ltd (formerly Prapen Group Limited, renamed twice within seven weeks), registered under a management-consultancy SIC code.
Cdpeptides on its own pages Cdpeptides says 'Every batch is third-party lab tested for purity and consistency'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Chilton Labs is a live UK shop holding stock for fast dispatch, selling research peptides alongside SARMs and GLP-1 compounds at GBP prices. Its testing claim is 'every batch is independently HPLC tested, with lab results published for transparency', but no independent laboratory is named and the results are self-published rather than verifiable on a lab's own site, so a buyer cannot confirm them. No company registration is shown.
Direct Peptides's product pages read 'Direct Peptides guarantees a minimum purity of 99% for most of its peptide products and 98% for more complex peptides'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Dnlabresearch tells buyers 'Every batch undergoes independent third-party testing and is accompanied by a Certificate of Analysis (COA), ensuring transparency and consistency'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
El Toro Supps (El Toro Research) is a hybrid supplements/SARMs/peptides store; its peptides claim 'β₯98% purity via HPLC and MS' and a 'COA verified batch,' but no laboratory is named and no report numbers are shown.
Elevate Peptides UK Ltd sells GLP-1 compounds (retatrutide) and BPC-157, with free UK shipping over Β£50, and says 'every product is batch-tested for purity, stability, and consistency,' but names no testing laboratory and links no certificate you can verify. No Companies House number or address is shown on the site.
Elite Lab Peptides Ltd (Companies House 17054485, 4-6 Gretorex Street, London E1 5NF) sells research peptides with GBP pricing and free UK delivery over Β£50, citing 'third-party tested' certificates and 'DND-grade' claims, but names no laboratory and publishes no verifiable certificate.
Elixirpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: leans on crypto payment (no buyer protection).
Emergencepeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: barely a functioning shop.
Evolve Biolab (Evolve Biolab UK Ltd, Companies House 17293718, 124 City Road, London) sells a broad range with a QR-code batch-verification system and is rated 4.8 on Trustpilot (131 reviews), stating products are 'verified through independent laboratory testing.' But it names no specific laboratory, so the 'independent test' cannot be checked against a named lab.
Expresspeptides markets its stock with the line 'Research-grade compounds, tested for purity, supplied to laboratories, clinics and professional buyers across the world'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
Fastukpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Flexpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Futurepeptides's product pages read 'Every vial is verified to be 99%+ pure, backed by independent testing using UK Good Lab Practices'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable. It also pushes GLP-1 'pens'/weight-loss framing.
GHK-Cu UK ghkcu.uk is a single-compound UK shop selling GHK-Cu copper peptide (from Β£65), claiming 'third-party HPLC' testing, batch certificates and 'product authentication', but names no laboratory and publishes no verifiable certificate. A single-compound specialist with an unnamed-lab testing claim.
GLP1Health sells Tirzepatide, Retatrutide, Semaglutide and some research peptides, claiming '99%+ purity, third-party lab tested, verified COAs and public test reports,' but names no laboratory. It shows a London address (2-4 Kenway Road, SW5) but no company registration number. Heavy patented-GLP-1 focus.
GLP1Wellness sells Retatrutide and Tirzepatide, positioning on 'the most competitive retatrutide price on the market' with a claimed '>99% purity third-party COA,' but names no laboratory and shows no company details. Patented-GLP-1 focus.
Gb Peptides the Gb Peptides site claims '>=99% purity (verified by HPLC) Third-party lab tested with full Certificates of Analysis available upon request'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Geopeptides's product pages read 'Every batch undergoes rigorous testing to ensure consistent high quality'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Ghpeptides promises 'Our commitment is to precision, purity, and reliability'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also pushes GLP-1 'pens'/weight-loss framing; markets to human users, not researchers.
Global Peptides's product pages read 'A peptide tested at 99% purity means approximately 99% of the analysed material matches the target compound being tested for'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Healand Limited (Companies House 14120887, Leicester) is a clinic-model seller offering monthly peptide-therapy plans (consultation plus peptides plus delivery from Β£350) covering BPC-157, GHK-Cu, KPV, TB-500 and AOD-9604 'for research purposes only.' It names no testing laboratory and publishes no certificate. A clinic model rather than a vial retailer, but selling the same compounds without verifiable testing.
Helios Labs (Helios Labs Ltd, Companies House 17180623, incorporated April 2026, London) sells retatrutide and related GLP-1 compounds and claims 'HPLC Verified Purity 98-99% on every batch' with a 'batch-specific Certificate of Analysis available'. No laboratory is named and no certificate is published for inspection, so the purity claim cannot be independently confirmed. The company is only a few months old.
Helix Peptides Ltd (Companies House 16855738) sells 5-Amino-1MQ, AOD-9604, BPC-157 and bac water with GBP pricing and Tracked 24h delivery (free over Β£50, UK mainland), but names no laboratory and publishes no verifiable certificate.
Index Peptides (describing itself as 'a UK supplier') sells BPC-157, TB-500, GHK-Cu, PT-141 and NAD+, and states its products are 'HPLC purity and LC-MS identity verified, and independently checkable by lot number,' but names no laboratory, so there is no independent server on which to check that claim. No company details are shown.
Interlink Peptides Ltd (Companies House 17100040) sells BPC-157, CJC-1295, Epitalon, GHK-Cu, Ipamorelin, MOTS-c and a 'Wolverine Stack' with GBP pricing and free next-day delivery over Β£100, but names no laboratory and publishes no verifiable certificate.
Jeopeptidesuk states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: runs contact/orders through WhatsApp; uses a personal Gmail address as a 'company'; pushes GLP-1 'pens'/weight-loss framing; markets to human users, not researchers.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Kent Labs presents as a 'UK Registered Research Peptide Supply Company' selling retatrutide, tirzepatide, BPC-157 and TB-500 with next-day UK dispatch at GBP prices. Its testing claim is '99% purity (HPLC tested)', 'COA Available' and 'Batch Tested', but no independent laboratory is named and no certificate is published for inspection, so the figures cannot be independently confirmed.
Kovalabs (a trading name of Floww Group Ltd, Companies House 15986643, 66 Paul Street, London) sells a broad range (retatrutide, BPC-157, tesamorelin, CJC-1295, GHK-Cu, melanotan, TB-500 and more) with a COA per batch and 'Dual HPLC & MS validation, 99%+ purity,' but names no independent laboratory. Its own chromatography is not third-party verification. Its cited Companies House entity is Floww Group Ltd (15986643), a software-development company (SIC 62012) with accounts overdue as of 2026 - not a peptide or retail entity.
Labgradepeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Leolab Uk the Leolab Uk site claims 'Third-party Tested Peptides you can trust, validated by third-party laboratory testing'. Behind 'third-party tested' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also recycles copy/templates shared with other 'brands'.
Lucid Peptides supplies research compounds (retatrutide, tirzepatide, BPC-157, TB-500, NAD+, MOTS-c) with UK fulfilment, branding itself 'third-party HPLC-MS certified' with a 'Verify Batch' page and 'third-party CoA documentation,' but names no laboratory. A 'verify batch' feature that checks against the seller's own site rather than a named lab's server is not independent verification. No company details are shown.
Lumialab states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
MMpeptides sells Retatrutide, GLOW-80, MT-2 and GHK-Cu with GBP pricing, free UK delivery over Β£100 and same-day dispatch, claiming '100% Purity Verified via HPLC on Every Batch', but names no laboratory and publishes no verifiable certificate.
Manchester Peptides sells research-peptide vials with GBP pricing, free UK shipping and same-day dispatch before 2pm, branding itself 'COA Verified Research Peptides UK' with '99.1% HPLC-tested purity across every batch', but names no laboratory and shows no company details. Its own HPLC number is not third-party verification.
Maxpeptides on its own pages Maxpeptides says 'Our peptides are produced to high purity levels and are typically tested using High Performance Liquid Chromatography (HPLC)'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable. It also recycles copy/templates shared with other 'brands'.
Maxxlabs advertises 'All products are supplied with Certificates of Analysis (COAs), which are available upon request'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Medimaxpeptides's site states 'Every product undergoes rigorous third-party laboratory testing to ensure purity and quality'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
πΈ Same operator as pulsepeptides.co.uk, the same registered address (82a James Carter Road); now Evo-Max Ltd and Bio Pulse Prime Ltd.
More Peptides sells peptides with GBP pricing and Royal Mail Tracked dispatch, saying a COA is 'issued per batch and available on request before you order' via 'accredited third-party laboratories', but names no specific laboratory. Its homepage products were showing out of stock.
Mybiolabshop the Mybiolabshop site claims 'BIOLAB is the only provider in the market that shares direct access to verified concentrations of its products'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable. It also sells SARMs.
πΈ Same operator as biolabshop.co.uk, a shared Facebook pixel, Google Analytics tag, WhatsApp number and contact emails.
New Wave Peptides states that 'every peptide is tested using HPLC and Mass Spectrometry' and advertises '100% 3rd-party verified purity with lab reports for every batch,' but it names no laboratory and publishes no verifiable certificate, so there is nothing to check those claims against. The trading entity, New Wave Solutions Limited (Companies House 16478331, VAT 505144526, Suite A, 82 James Carter Road, Mildenhall IP28 7DE), is newly registered. Until it publishes an own-name certificate from a named independent lab you can verify, treat the purity claim as marketing.
NexGen Peptides Ltd (registered in Northern Ireland, Companies House NI736459) sells BPC-157, TB-500 and MOTS-c with GBP pricing and free next-day delivery over Β£100, claiming 'third-party HPLC analysis' and an 'independent COA', but names no laboratory and publishes no verifiable certificate.
Next Day Peptides ('ndp+') sells tirzepatide, semaglutide, MT-2, cagrilintide, HGH and retatrutide with GBP pricing and Royal Mail Tracked 24, saying a COA is available on request via an 'external NATA-accredited laboratory', but names no specific laboratory.
Nextgen Labs markets its stock with the line 'UK-stocked, lab-tested compounds with 99%+ purity'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Nexumpeptides markets its stock with the line 'Our peptides are manufactured in a cGMP-compliant laboratory and undergo stringent HPLC testing to guarantee purity levels exceeding 99%'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
Nexus Peptides (matching Nexus Peptides Ltd, Companies House 16987354) sells retatrutide and tirzepatide pens, IGF1-LR3, MT-2 and MOTS-c with GBP pricing and a 'COA's' header, but names no laboratory and publishes no verifiable certificate.
Nicello UK sells BPC-157, TB-500, GHK-Cu, Epithalon, GHRP-6, ipamorelin and CJC-1295 'for UK Scientists', dispatched within 24 hours from a UK-based supply chain at GBP prices. It states products are 'third-party HPLC verified to over 99% purity with a Certificate of Analysis included on every order' and 'a COA issued per batch, per order', but no independent laboratory is named and no certificate is shown for inspection, so the purity claim cannot be independently confirmed. No company registration is shown.
Nova Biolabs claims 'HPLC Verified >98%' purity but names no testing laboratory and publishes no certificate of analysis, so there is nothing to check that number against. More telling, it runs a 'Verify Us' page warning buyers about scammers who 'create lookalike profiles' and impersonate the brand, yet it gives no way to verify the actual product: no lab, no COA, no batch check. It manufactures worry about fakes while offering no proof its own vials are what the label claims. It also trades mainly in GLP-1 compounds (tirzepatide, retatrutide, semaglutide) sold as vials and pens. A UK buyer has since reported that an independent Janoshik test of a Nova Biolabs retatrutide 10mg vial came back at only about 2.3mg of active content, roughly a quarter of the labelled dose.
Nova Research sells lyophilised research peptides 'for laboratory use only', GBP-priced and behind an age gate. Its quality page claims 'over 99% purity' and 'independent analytical verification', but names no laboratory, gives no third-party report and publishes no certificate, so the purity claim cannot be independently confirmed. No company registration is shown on the site.
NovaVitality LTD (Companies House 16876356) sells peptides, Melanotan 2 and GLP-1 compounds with 'Rigorously Verified' branding, but names no testing laboratory and publishes no certificate of analysis. It has a small, generally positive Trustpilot presence. Nothing is published to verify.
Novapeptide's product pages read '99.4%+ Purity Guaranteed HPLC and MS tested by independent labs'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
πΈ Same operator as britpeptides.co.uk, a shared Facebook tracking pixel (same operator).
Nupex trades as Research Scientific Ltd (Companies House 16181281, Christchurch) and states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate, offering a COA only 'where available' on request. A purity claim with no named lab, no published document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
πΈ Same operator as researchscientific.co.uk, both are Research Scientific Ltd (Companies House 16181281).
OL Research (Optimised Lifestyle Holdings Ltd, Companies House 17095653, North Tawton, Devon) is unusually transparent about its company details and sells a full repair-lane range (BPC-157, KPV, GHK-Cu, GLOW, KLOW). It is 'rated Excellent on Trustpilot' and claims research-grade HPLC β₯99%, but names no single independent laboratory and publishes no verifiable own-name certificate on the shop pages. Promising transparency, but the testing itself is not yet verifiable.
Obsidian Sciences (61 Bridge Street, Kington HR5 3DJ) sells BPC-157, KPV, GHK-Cu, Selank, Semax, TB-500 and ARA-290 with GBP pricing and Royal Mail dispatch, claiming products are 'third-party verified' with 'COA, HPLC β₯99%', but names no laboratory and publishes no verifiable certificate.
Onlinepeptidesuk promises 'All products undergo regular third-party laboratory testing for purity, potency, and heavy metals to maintain our high standards'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, jeopeptidesuk.co.uk, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Opti Peptides (matching Opti Peptides Ltd, Companies House 16852554) is now trading: a live catalogue of 20+ products (Retatrutide 10mg Β£74.99, SLU-PP-332, MOTS-c, bac water) with GBP pricing and rapid UK shipping. It says products are 'verified through appropriate testing and quality-control standards' but publishes no COA and names no laboratory.
Order Peptides sells BPC-157, GHK-Cu, IGF-1 LR3, MT2, MOTS-C, semaglutide and tirzepatide with GBP pricing on a .co.uk site, and has a lab-results page, but names no laboratory on it, so the results cannot be verified against a named lab.
PFL Peptides UK Ltd (Companies House SC891876, Scotland) sells GHK-Cu, MOTS-C, NAD and retatrutide with GBP pricing, saying products are 'independently tested by HPLC', but names no laboratory and publishes no verifiable certificate.
PGNA Labs ('cheapest research peptides in the UK') sells BPC-157, TB-500, Retatrutide, GHK-Cu and MOTS-c with free UK shipping over Β£50 and 'batch COAs available for download on every product page,' claiming third-party HPLC testing, but names no laboratory and shows no company details. A downloadable COA from an unnamed lab is not independently verifiable.
PGR Peptides Ltd (Companies House 17221813) is a live UK shop selling BPC-157 (Β£16), 5-Amino-1MQ, SS-31, KPV, NAD+ and MOTS-C with GBP pricing and a UK phone line, referencing 'third-party testing' and a 'link to COA certificate', but names no laboratory, so the certificate cannot be traced to an independent lab.
PH Labs sells 14+ research peptides (including BPC-157) with GBP pricing on a .co.uk site, shipping 'an HPLC trace, mass-spec data and a Certificate of Analysis with every order'. The testing appears to be in-house, and no independent laboratory is named (no Janoshik link). A vendor's own HPLC trace and CoA are not third-party verification.
PTLabs sells loaded pens, refills, vials and oral peptides (Retatrutide, Tirzepatide, Tesamorelin) with GBP pricing, saying it ships 'directly from our UK lab'. Janoshik appears on the product pen photos and labels rather than as a text claim with a working verify link, so there is no per-batch certificate we can independently check.
Peakpeptides markets its stock with the line 'High grade purity tested Retatrutide'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Pendragonpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Pep Matrix sells peptides across metabolic, repair, GH-axis and cognitive categories with GBP pricing and UK shipping, referencing certificates of analysis and 'batch-tested compounds,' but names no laboratory and shows no company address (WhatsApp/email contact only).
Peptide Barn sells peptide vials and pre-filled pens (GHK-Cu, Retatrutide, Tirzepatide) with GBP pricing and fast UK shipping, citing 'rigorous batch testing' and '>99% purity', but names no laboratory and publishes no verifiable certificate.
Peptide Clinics Limited (Companies House 17152990, Devonshire House, 582 Honeypot Lane, Stanmore) sells AOD9604, BPC-157, CJC-1295, DSIP, Epithalon, GHK-Cu, retatrutide and tirzepatide with GBP pricing, but names no laboratory and publishes no verifiable certificate.
Peptide House sells 100+ research peptides (BPC-157, ABP-7 and more) with GBP pricing and free shipping over Β£200, mentioning 'rigorous independent testing', but names no laboratory and publishes no viewable certificates.
Peptide Lab ('UK sourced, UK storage') sells Tirzepatide, Semaglutide and BPC-157 with GBP pricing and next-day dispatch, saying there is 'a certificate with every order', but names no laboratory, so the certificate cannot be independently checked.
Peptide Products (Companies House 17073416) sells a GLP-1-leaning range and shows a 'test report' on selected product pages (retatrutide, GHK-Cu, NAD), but names no laboratory and surfaces no verifiable report numbers. A registered UK entity, but the testing itself is not yet verifiable.
Peptide Retatrutide UK sells Retatrutide, GHK-Cu, BPC-157, TB-500, NAD+, Sermorelin, Semax, Selank, AOD-9604 and more at GBP prices, wrapped in heavy 'Buy Retatrutide [city]' doorway-page SEO covering dozens of UK towns. It repeatedly claims 'independent third-party testing' and 'we publish our Certificates of Analysis openly', yet no laboratory is named anywhere and no verifiable certificate or verification key is shown. Tellingly, the homepage still carries unedited page-builder demo text, 'HOT SUMMER FASHION From 19$', 'THIS IS AN AWESOME VIDEO BANNER', and 'A Nice top title CHANGE THIS TO ANYTHING, This can easily be edited in the page builder', which shows the site was thrown together from a template and never finished. A 'Jenny Brooks / LinkedIn' byline appears with no verifiable identity. An unnamed, unpublished test is a marketing line, not proof.
Peptide Supplies on its own pages Peptide Supplies says 'Each peptide is sourced from trusted laboratories and undergoes independent testing to ensure purity and accuracy'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Peptide Vault (matching Peptide Vault Ltd, Companies House 16606409) sells tirzepatide, retatrutide and GLOW pens plus stacks with GBP pricing, shipping to UK and Northern Ireland only with next-day delivery Mon to Thu. It cites 'trusted third-party laboratories' but names none, and contact is WhatsApp-only, a higher-friction pattern. Companies House shows an ACTIVE PROPOSAL TO STRIKE OFF this company (Peptide Vault Ltd, 16606409).
πΈ Same operator as prestigepeptides.co.uk, shares 82/82a James Carter Road, Mildenhall IP28 7DE with Prestige Peptides (and New Wave at 84).
Peptide Zone sells Tirzepatide and Retatrutide pens, peptide vials, orals and injection equipment with GBP pricing and fast UK delivery, describing products as 'Third Party Tested' and 'Pharmaceutical Grade', but names no laboratory and publishes no verifiable certificate. Tirzepatide Pen 30mg Β£130; Retatrutide Pen 30mg Β£140.
Peptidelabuk's product pages read 'Each Certificate of Analysis may include: Batch identification Analytical testing reference Purity verification range'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Peptidepro peptide Pro (peptidepro.co.uk) was previously tagged as Janoshik-linked, but on review we found no published certificate, task number or verification link, and the site itself was not responding (connection refused) at the time of checking. Its sister site peptideprobrand.co.uk is live but also publishes no verifiable certificate. Until a genuine own-name Janoshik certificate we can verify appears, it stays on the watch list.
Peptideprobrand peptide Pro Brand (peptideprobrand.co.uk) sells research-grade peptides and leans on 'high purity, lab tested' marketing, but on review it publishes no certificate of analysis, names no laboratory and provides no verification link. Despite earlier Janoshik branding, we found no verifiable Janoshik certificate on the site.
Peptides Distro is a UK-based wholesale/white-label peptide portal (own brands 'Everything Peptides', 'Stack Peptides') with a UK warehouse and same-day dispatch, but prices are behind a trade login and it names no testing laboratory. A B2B supplier rather than a straightforward retail shop; its displayed phone number looks like a placeholder.
Peptides UK 4U sells a wide range including GLP-1s (retatrutide, semaglutide, tirzepatide, cagrilintide) alongside classic research peptides, stamping 'Lab tested, 99%+ purity' and 'independent third-party HPLC testing on every batch.' It names no laboratory and publishes no certificate you can verify. It also shows no registered company, no VAT number and no trading address, and takes contact only through WhatsApp and email. An anonymous, WhatsApp-only seller with an unverifiable purity claim is exactly the profile buyers should be most careful with.
Peptides4U states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Peptidesclinic markets its stock with the line 'Lab Reports & COA Available on Request'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also pushes GLP-1 'pens'/weight-loss framing.
Peptideshop's product pages read 'Each batch should include a Certificate of Analysis (COA), with tamper-evident packaging and full traceability'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Peptidesupplyuk promises 'All products third-party tested with COA'. It names no testing laboratory and publishes no certificate to look at, so 'third-party tested' cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable. It also pushes GLP-1 'pens'/weight-loss framing; barely a functioning shop.
Peptidez Ltd (Companies House 16673501) is a live UK shop selling 11 research peptides (BPC-157 5mg Β£45, Epitalon + GHK-Cu, HGH 10IU Β£100, bac water) with GBP pricing and 'research use only' branding, describing products as 'lab-tested', but names no laboratory and publishes no verifiable certificate. (Confirmed live by browser; it bot-blocks automated fetching.)
Peptigenuk states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Peptivabiohealth states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: pushes GLP-1 'pens'/weight-loss framing.
Peptomera Research Compounds sells GLP-1 'pen kits' (Retatrutide 40mg Β£175, Tirzepatide 40mg) and other compounds in pounds, claiming products are 'verified using established analytical methods,' but names no laboratory and publishes no certificate. Domain registered January 2026.
Pharma Lab Global runs a UK-facing storefront (uk.pharmalabglobal.com) in pounds with a 'Third Party Test Certificates' link, but names no specific laboratory in its content and shows no UK company details. A large multi-region brand with opaque sourcing.
Pharma-One Peptides sells BPC-157, AOD-9604, cagrilintide, 5-amino-1MQ and a Semax nasal spray with GBP pricing and UK shipping, ordered via a WhatsApp line (+44 7307 333532), but names no laboratory and publishes no verifiable certificate.
Powerpeptides advertises 'All compounds undergo independent third-party lab testing before release'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
Precision Peptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: also sells SARMs.
Premier Peptides UK (matching Premier Peptides UK Ltd, Companies House 17066691) sells 5-Amino-1MQ, BPC-157, MOTS-C and AOD-9604 with GBP pricing and a UK phone, but is listed at 20 Wenlock Road, London N1 7GU (a shared virtual-office address) and names no laboratory.
Premio Peptides (Bell Red Limited, Companies House 12841067) sells 26+ compounds with same-day UK dispatch and, unusually, includes a comprehensive COA (HPLC chromatograms, mass spec, amino acid analysis and endotoxin testing) with every order, saying the lab's name and accreditation are on each certificate. But the laboratory is not identified on the website itself, so you cannot verify it before ordering. Good documentation, unnamed lab. Its cited company number resolves to Bell Red Limited, a differently-named company.
Prestige Peptides (matching Prestige Peptides Ltd, Companies House 16938234) sells a broad WooCommerce catalogue (BPC-157, TB-500, NAD+, Tesamorelin, Cagrilintide) with GBP pricing and a UK region setting, describing itself as 'leading in the UK peptide market', but names no laboratory and publishes no verifiable certificate.
πΈ Same operator as peptidevault.co.uk, shares 82/82a James Carter Road, Mildenhall IP28 7DE with Peptide Vault (and New Wave at 84).
Pro-Peptides sells regenerative blends (Glow, Wolverine, Klow) and growth peptides, claiming 'comprehensive batch documentation with independent analytical testing conducted where applicable' but naming no laboratory. 'Where applicable' and 'pharmacist-led standards' are marketing, not a verifiable certificate. No company details are shown.
Prolabpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Pulsepeptides promises 'Our products are rigorously tested for purity and consistency, ensuring the best results for your research projects'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
πΈ Same operator as medimaxpeptides.com, the same registered address (82a James Carter Road); now Evo-Max Ltd and Bio Pulse Prime Ltd.
Pure Peptides UK sells lyophilised research peptides (GHRP-2, Ipamorelin, IGF-1 LR3) with GBP pricing and next-day insured UK shipping, claiming 'HPLC and mass spectrometry testing' and '>99.2% validated purity', but names no laboratory and publishes no verifiable certificate.
Purepeptidesuk the Purepeptidesuk site claims 'Our third-party laboratory is currently experiencing staffing shortages, which has resulted in delays to some batch testing results'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Purepeptidesuk states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
QSC Peptides UK (qsc-uk.com, shop at qscpeptide.com) is an overseas grey-market operator (Qingdao Sigma Chemical) running a UK-domestic-shipping storefront, priced in USD on the parent site, crypto-only (BTC/USDT). Its product pages embed a Janoshik COA naming QSC as both Client and Manufacturer (e.g. task #85185), which is better than most, but the certificate is a static image with no working verify link, and the task number alone does not resolve on Janoshik's server, so we could not independently confirm it. Not a UK company.
RAW Peptides sells Retatrutide, GLOW, MT2 and NAD+ with GBP pricing, but publishes no certificate of analysis, names no laboratory and shows no company address, with contact by WhatsApp and phone only. Nothing to verify.
Ranked-Peptides sells research-only peptides with fast UK delivery and a WhatsApp line, saying a 'Certificate of Analysis is available on request' and that products are '98%+ HPLC and mass spectrometry tested', but names no laboratory. No pricing is shown on-site.
Researchpeptides promises 'Our products are manufactured in cGMP Compliant ISO9001 Certified state of the art laboratories to ensure our customers get the best quality'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Reta Research is a single-focus retatrutide shop (also GHK-Cu, melanotan 2 and bacteriostatic water) offering discreet next-day UK shipping at GBP prices. It states 'independent third-party analysis confirms identity, purity and composition before release' and 'Verified Purity 99% by HPLC', but no lab is named and no report is published. A near-identical domain, reta-research.co.uk, presents the same 'Research Peptides UK' branding but does not currently resolve, so the two appear to be the same or a mirrored operator. No company registration is shown.
Retapen40 (Vantyx Labs Ltd, 124-128 City Road, London EC1V 2NX) sells pre-loaded retatrutide pens with GBP pricing (Β£189 to Β£698) and Royal Mail tracked UK delivery, but leans on 'wellness' framing and names no laboratory. Borderline research-versus-wellness positioning.
RetatrutideStore UK retatrutideStore is a UK-facing reseller/marketplace (GBP pricing, free delivery over Β£200) stocking third-party brands such as Synedica, Remedium Research, Hygen Pharma, Adelphi Research, Alluvi, Viogen and VLS across Retatrutide, Tirzepatide, Semaglutide, NAD+, BPC-157 and TB-500. It names no testing laboratory and publishes no certificate of its own: any quality claim rests on the brands it resells, not on anything this storefront has tested or can show you. A reseller that publishes no COA is asking you to trust a chain of hands you cannot see.
Revion Peptides claims 'independent third-party testing' with certificates 'available for verification', but names no lab and publishes none, its COA pages return 404. Wholesale runs through a Netherlands WhatsApp number, and its own disclaimer still reads 'Liberty Peptides is a chemical supplier', copied boilerplate from another brand, alongside a US FDA notice on a UK site. There is nothing here you can actually check.
Revive Peptides (matching Revive Peptides Limited, Companies House 17049124) sells BPC-157, TB-500, GHK-Cu and NAD+ with GBP pricing, fast UK delivery and a UK phone, saying products are 'tested to ensure purity', but names no laboratory and publishes no verifiable certificate.
Rndpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: barely a functioning shop.
Sculptpeptide states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Starbiotechandhealth promises 'All products are supported by rigorous documentation and independent third-party testing for purity, identity, and consistency'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also pushes GLP-1 'pens'/weight-loss framing; markets to human users, not researchers.
Sterlingpeptides states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: barely a functioning shop.
Steroids UK is primarily a UK-domestic steroid/PED vendor with a peptides category (BPC-157 and others, sold under the third-party 'Syncom Labs' brand). It states peptides are 'lab-tested for purity and dosed exactly as labelled' but names no laboratory and provides no certificate.
Surrey Peptides Ltd (Companies House 17065803) sells Retatrutide, GLOW and bundles with GBP pricing, but names no laboratory and publishes no verifiable certificate.
Sussex Peptides Ltd (Companies House 16707220, Brighton, East Sussex; sussexpeptides.co.uk redirects here) sells Snap-8, AOD9604, NAD+, MOTS-c and bac water with GBP pricing, but names no laboratory and publishes no verifiable certificate.
SwissChems UK sells research peptides (a BPC-157 and TB-500 blend, ARA-290, bioregulators) alongside SARMs with GBP pricing and free UK shipping over Β£100, but names no laboratory and publishes no verifiable certificate.
Synedica (synedica-uk.shop) is the brand's storefront selling Synedica-branded retatrutide, semaglutide and NAD+ with GBP pricing, a UK phone line and free UK shipping, but names no laboratory and publishes no verifiable certificate. Same brand as synedicapeptides.co.uk.
πΈ Same operator as synedicapeptides.co.uk, same Synedica brand and operator.
Synedica Peptides sells retatrutide, tirzepatide and semaglutide pens and kits with GBP pricing, Royal Mail 24 and free delivery over Β£150. It names no laboratory on the product pages. It is part of a wider 'Synedica Verified Supplier' network (which also includes the already-listed jeopeptidesuk.co.uk) and that network advertises Janoshik elsewhere, but nothing verifiable is surfaced here.
πΈ Same operator as synedica-uk.shop, same Synedica brand and operator.
Synergetics promises 'High-purity peptides manufactured to rigorous quality standards'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
SYNTECH PEPTIDES Ltd states every batch goes through HPLC and mass spectrometry with a 'β₯98% minimum purity guarantee' and a COA per batch, but names no laboratory. The company number shown on the site ('113997061') is nine digits where UK numbers are eight, so treat it as unverified. Domain registered February 2026.
Tesamorelin (Premium Research Peptides) tesamorelin.co.uk ('Premium Research Peptides') is a single-compound UK shop selling only Tesamorelin (10/20/30mg, Β£99 to Β£299) for research use, with GBP pricing, but publishes no certificate of analysis and names no laboratory. A single-compound specialist with no verifiable testing.
Tesamorelin Lab sells tesamorelin, tirzepatide, semaglutide, retatrutide and cagrilintide for 'UK laboratory research' with fast domestic delivery. It states each order is 'accompanied by a Certificate of Analysis' and is 'third-party tested', but names no independent laboratory, shows no company number and publishes no verifiable certificate. Its own site even advises buyers to 'demand a Certificate of Analysis', advice it does not itself satisfy with anything checkable.
The Peptide Cove sells research peptides and injection supplies with UK dispatch by Royal Mail Tracked, offering 'independent third-party testing results upon request', but names no laboratory. No pricing is shown on-site.
The Peptides Lab sells Retatrutide, Tirzepatide, Cagrilintide, NAD+ and Tesamorelin with GBP pricing and free UK shipping over Β£70, describing products as 'lab-tested' and 'rigorously tested to verify purity' via 'trusted manufacturing partners', but names no laboratory and publishes no verifiable certificate.
The Peptides Outlet markets its stock with the line 'A COA reflects a tested sample, not necessarily every unit sold'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
Thepeptidecode promises 'Independently lab-verified research peptides with published per-batch Certificates of Analysis'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Thepeptidecode states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Thepeptidecompany states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust. Aggravating: pushes GLP-1 'pens'/weight-loss framing.
Thrivepeptiva states its peptides are 'third-party tested' / 'lab tested' to β₯99% but never names the lab and publishes no verifiable certificate. A purity claim with no lab, no document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.
Tridentpeptide's product pages read 'All our peptide batches are tested for purity by HPLC and MS-UPLC analysis and logged at the lab'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Tridentpeptides tells buyers 'Purity Level >99% (HPLC Verified)'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Tridentpeptidesuk promises 'Purity Level >99% (HPLC Verified)'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
πΈ Same operator as aurapeptidesuk.com, biopeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, all registered to one address, 54a Tyler Avenue, Loughborough.
Trimfast on its own pages Trimfast says 'Each batch is independently tested by third-party laboratories, with certificates available to confirm purity and consistency on request'. It names no testing laboratory and publishes no certificate to look at, so 'independently tested' cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also pushes GLP-1 'pens'/weight-loss framing.
Tru Form Peptides Ltd (Companies House 17141033), 'a leading provider of peptides to the UK', sells Tesamorelin, GLOW and NAD+ with GBP pricing and generic '3rd party testing' claims, but names no laboratory and publishes no verifiable certificate.
Trust Peptides (operating entity Radiant Global Holdings Ltd, Companies House 15553142) sells TB-500, BPC-157, DSIP, GHK-Cu and PT-141 with GBP pricing, same-day dispatch and free delivery over Β£50, saying 'all of our peptides are tested', but names no laboratory and publishes no verifiable certificate. A registered UK entity, but the testing itself is not verifiable. Its operating company Radiant Global Holdings Ltd (15553142) was previously named 'SO DAMN TANNED! LTD' (a tanning business) until July 2025, at a Shelton Street formation-agent address.
Trusted Peptides sells BPC-157, Tirzepatide, Retatrutide and other GLP-1/GHS peptides with GBP pricing, cold shipping and free UK delivery over Β£100, saying products are 'supplied with COA', but names no laboratory and publishes no verifiable certificate.
UK Chems (ukchems.shop, possibly Research Chems Limited, Companies House 16703658) sells 17 research peptides (BPC-157, CJC-1295, TB-500, GHK-Cu, NAD+, PT-141, MOTS-c and more) with GBP pricing and free shipping over Β£50, claiming 'independent third-party batch testing' but naming no laboratory. Most lines were showing out of stock.
UK Peps sells research peptides across regenerative, weight-loss, growth and tanning categories with Royal Mail UK delivery, claiming 'premium research peptides with independent HPLC purity verification, every batch rigorously tested,' but names no laboratory and shows no company details. Batch numbers and COAs are referenced but nothing is published to verify against a named lab.
UK Peptide Co (5 Brayford Square, London E1 0SG) sells Tirzepatide, Retatrutide, Sermorelin, GHK-Cu, Tesamorelin and MOTS-C with GBP pricing, fast UK delivery and free shipping over Β£100, saying 'every batch undergoes rigorous quality verification', but names no laboratory and publishes no verifiable certificate.
UK Peptide Store sells 50+ peptides (BPC-157, Tirzepatide, Semaglutide) with GBP pricing, Royal Mail Tracked and same-day dispatch from a UK warehouse, saying products are 'HPLC-tested β₯98% purity, COA available on request' by email with batch details, but names no laboratory.
UK Peptide Supply (distinct from the separately-listed peptidesupplyuk.co.uk) sells research compounds including Melanotan 2, claiming 'carefully sourced, third-party tested' but naming no laboratory and showing no certificates on the page. It has a Trustpilot presence. Domain registered March 2026.
UK Peptides Online (409 Linthorpe Road, Middlesbrough TS5 6JN) sells BPC-157, retatrutide, IGF-1 and MT-1 with a UK address and Royal Mail dispatch, but its default pricing is in USD and it names no laboratory, claiming only 'HPLC and MS' testing with no verifiable certificate.
UK SARMs (UKS International Limited) markets itself as 'the UK & Europe's #1 SARMs supplier' and carries a genuine peptide range (GHK-Cu, MOTS-c, SNAP-8, retatrutide, Melanotan) alongside SARMs. It says products are 'tested by two third-party laboratories' but names neither. Its registered address is in Gorzow, Poland, not the UK, despite the UK-facing brand.
UK Sterling Peptides sells BPC-157, TB-500, CJC-1295, ipamorelin, SS-31, epithalon and KPV, GBP-priced and 'UK based and shipped' as a sole trader. Unusually, the site makes no reference to purity, HPLC testing, third-party analysis or certificates of any kind, so there is no testing claim to assess and nothing a buyer could independently check. No company registration is shown.
Uk Peptide promises 'UK-sourced, HPLC-verified peptides with β₯99% purity are the benchmark for reliable research data'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Uk Pharmagrade's site states 'Our peptide purity is ensured through: HPLC purification Mass spec verification Batch testing COA'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Ukpeptidesshop tells buyers 'This is why we provide 99% purity levels on our flagship products like BPC-157 and CJC-1295'. Behind that claim there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
Ultimate Peptides the Ultimate Peptide Lab Ltd (Companies House 17241799) is a live UK shop (age-gated) selling BPC-157 + TB-500, Melanotan II nasal, GLOW 70mg and bac water with GBP pricing and WhatsApp support, but names no laboratory and publishes no verifiable certificate. (Confirmed live by browser.)
Ultra Peptides UK sells 75+ compounds (TB-500, BPC-157, Tesamorelin, SS-31, PT-141, NAD+, IGF-1 LR3) with GBP pricing, UK shipping and free delivery over Β£50, saying products are 'HPLC tested with CoA verification confirmed by accredited laboratories', but names no specific laboratory.
United Kingdom Direct Peptides tells buyers 'Guaranteed +99% Purity HPLC Tested'. Behind 'HPLC testing' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. Until a lab is named and a report published, the quality claim is unverifiable.
VIA Peptides sells Retatrutide in precision-pen and nasal-spray formats, 'prepared in the UK' with 2 to 4 day UK delivery, saying 'Certificates of Analysis are available for every batch' via 'independent testing', but names no laboratory and publishes no verifiable certificate.
Veralis Labs is an age-gated UK shop ('Premium Research Peptides UK', for research use only) advertising research peptides at GBP prices. It shows a 'Third-Party COA' claim but names no independent laboratory, and no verifiable certificate is published, so the testing claim cannot be independently confirmed. As checked on 11 July 2026 the storefront was partly broken: the homepage loaded behind a 'We're offline' banner and displayed automated 'someone just purchased' urgency notifications, while product pages crashed with a fatal script error, so the shop could not be browsed or bought from. No company registration is shown. Worth re-checking whether it stabilises.
Verifiedpeptides markets its stock with the line 'Every batch is tested using HPLC and mass spectrometry to verify 99%+ purity'. It names no testing laboratory and publishes no certificate to look at, so 'HPLC testing' cannot be traced back to anyone. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence. It also leans on crypto payment (no buyer protection).
Vital Peptides Limited (Companies House 16752984) sells GLOW, KLOW, MOTS-c, NAD+ and retatrutide with GBP pricing, free delivery over Β£150 and next-business-day dispatch, but names no laboratory and publishes no verifiable certificate.
Vitalis Labs vitalis Peptide Research Ltd (Companies House 17034149), trading as 'Vitalis Labs - Peptides UK', is a live UK shop selling auto-inject pen kits (BPC-157 + TB-500, KLOW 80mg, GHK-Cu 50mg) with GBP pricing, a peptide calculator, usage guide and WhatsApp support, branding itself an 'EU compliant peptide supplier', but names no laboratory and publishes no verifiable certificate. (Confirmed live by browser.)
VyoMax Nutrition (Megamax Limited t/a SK Sport Supplies, VAT 639017340, a Manchester bodybuilding-supplement shop) carries injectable Melanotan 2, MT2 nasal spray and a TB-500/BPC-157 blend alongside mainstream supplements, with no certificate of analysis or laboratory named for the peptide products. Primarily a supplement retailer, not a research-peptide specialist.
Wgpeptides tells buyers '99%+ purity, third-party tested with Certificates of Analysis'. Behind 'third-party tested' there is no named laboratory and no certificate you can pull up, so a buyer is asked to take the number on trust. A purity number a buyer cannot trace back to a laboratory is marketing, not evidence.
Wholesalepeptides promises 'Third-party testing is used to validate: Compound accuracy Purity and concentration Overall product integrity'. It names no testing laboratory and publishes no certificate to look at, so that claim cannot be traced back to anyone. Until a lab is named and a report published, the quality claim is unverifiable.
Zenterex (trading as Strata Sourcing Ltd, Companies House 16961416, London) is a live UK shop selling BPC-157, TB-500, GHK-Cu, NAD+, MOTS-c, Semax and Selank 'for laboratory research only', with next-day UK delivery at GBP prices. It states 'Certificates of Analysis from independent third-party laboratories are available for every product', but no independent laboratory is named and no certificate is published for inspection, so nothing about a given batch can be independently verified. The trading company is registered, but its peptide testing is not tied to any named lab.
Real lab, but not Janoshik 4
Biopeptidesuk's product pages read 'We do not just sell peptides; we provide the analytical proof of their sequence and purity'. It does publish genuine third-party analysis in its own name, just through a different laboratory than the Janoshik standard this index is built on. It is one of the closest calls on the watch list: the only gap is which laboratory did the testing, not whether real testing happened.
πΈ Same operator as aurapeptidesuk.com, jeopeptidesuk.co.uk, onlinepeptidesuk.com, peptidesuk.co.uk, peptidesuk.com, purepeptidesuk.com, purepeptidesuk.net, tridentpeptidesuk.com, all registered to one address, 54a Tyler Avenue, Loughborough.
Forgepeptides on its own pages Forgepeptides says 'We reject anything under 99% purity'. The testing behind that claim is real and in the seller's own name, only it runs through a laboratory other than Janoshik. For a buyer this sits among the safer watch-list entries, since the distance from the verified list is the choice of laboratory rather than any lack of genuine testing.
Geneticresearch's product pages read 'Lab-Tested Purity Each batch undergoes third-party testing to confirm maximum purity, providing full confidence in every product you receive'. It does publish genuine third-party analysis in its own name, just through a different laboratory than the Janoshik standard this index is built on. It is one of the closest calls on the watch list: the only gap is which laboratory did the testing, not whether real testing happened.
Proforma Peptides is the cleanest of the non-Janoshik sites: it commissions genuine Certificates of Analysis from Analiza BiaΕek, a real independent lab, with itself as the client. The only mark against it is that it's Analiza, not the Janoshik standard this index is built on, so it sits just outside the independently-tested list rather than among the bad actors. Aggravating: the reports seen are dated September 2025 and served from personal Dropbox links.
Reportedly linked to MHRA weight-loss-medicine seizures; storefront now dead 1
Alluvi Health Care in May 2026 the MHRA carried out its largest-ever seizure of unlicensed weight-loss medicines, about 12,000 doses of retatrutide and tirzepatide, at a facility near Northampton, with two people arrested (MHRA press release, 29 May 2026). The MHRA's own release does not name a brand, but BBC and Guardian reporting has linked the Alluvi brand to that enforcement action. Separately, and independently checkable: Alluvi did publish a genuine own-name Janoshik certificate (retatrutide 99.859%, task #81445, October 2025) that still verifies, but the storefront buyalluvi.co.uk no longer resolves (NXDOMAIN, checked July 2026), and the 'Alluvi' name now spans a dozen near-identical sites (alluvi.bz, alluvi.store, alluvipharma.co.uk, alluvistore.co.uk and more), so a buyer cannot tell which seller, if any, holds that certificate. Alluvi's own pages say its genuine sites never take payment through WhatsApp, yet buyalluvi took orders that way, and Trustpilot reviews of Alluvi-branded sites report an advance-fee pattern (demands to 'release' a paid order). A verifiable certificate proves a sample was tested once; it vouches for neither the seller nor fulfilment. On these grounds it sits on the watch list, not the verified list.
Reseller showing the maker's certificate 1
The PED Shop (front at thepedshop.com, storefront at thepedshop.is, with .io/.net/.co.uk/.to mirrors) sells research peptides, BPC-157, TB-500, GHK-Cu, Retatrutide, Tirzepatide, Semaglutide, CJC-1295, Tesamorelin, KPV, at GBP prices with 24h UK dispatch. On its Quanta Pharma BPC-157 page it shows a Janoshik result (99.76% purity, 5.21mg content) with a genuine verification key (janoshik.com/verify, key K1CE4JZ56AKZ, tested September 2025). That is a real certificate, but it belongs to the maker, Quanta Pharma, this shop is a 'Verified Quanta Pharma Re-seller', so the testing is the supplier's, not an own-name certificate from the retailer. Weighing against it: the bulk of the catalogue is anabolic steroids (testosterone, trenbolone, masteron, dianabol, anavar) and prescription-only medicines (Modafinil, Metformin, Cialis, Viagra, Accutane, Clomid, Tamoxifen, HCG), checkout is completed by sending an order over WhatsApp, and payment is pushed toward cryptocurrency, all markers of a grey-market operation rather than a transparent research-peptide supplier.
The rule. A Certificate of Analysis is meaningful only if an independent laboratory tested that seller's own batch and you can verify it. In-house tests, "COA on request" promises, unnamed "accredited" labs, factory QC sheets and borrowed certificates all fail this test. If you cannot verify a current Janoshik report in the seller's own name, do not buy.
Frequently asked questions
Which UK research-peptide vendors publish their own verified Janoshik certificate of analysis?
As of 2 August 2026, 30 of the 326 active UK research-peptide retailers The Peptide Watch tracks publish their own verifiable Janoshik certificate of analysis, a report from the independent laboratory Janoshik Analytical that names the vendor itself as the client and can be checked on Janoshik's official website. Ranked by most recent certificate, they are: Incline Peps (Jul 2026), Lab77Peptides (Jun 2026), Peptology Labs (Jun 2026), Biohacklondon (Jun 2026), Velonix Labs (Jun 2026), Peptide Biosciences (Jun 2026), Liverpool Advanced Biosciences (LAB.LTD) (Jun 2026), Grey Matter Peptides (Jun 2026), Peptifyuk (May 2026), Biohackpeptides (May 2026), Peptideprime (May 2026), Momentumpeptides (May 2026), Peptidesresearch (May 2026), Reta24 (May 2026), Intel Peptides (May 2026), Phoenixbiolabs (Apr 2026), Bodylab Store (Apr 2026), Unionbiolabs (Apr 2026), Ck Peptides (Mar 2026), Xlpeptides (Mar 2026), Ascendpeptidesuk (Mar 2026), Regenix Peptides (Mar 2026), Wolverinepeptides (Feb 2026), Tested Peptides (Jan 2026), Thoroughbredlabs (Sep 2025), Britpeptides (Sep 2025), BuyRetatrutide (Sep 2025), Kensingtonlabs (Jul 2025), Imperialpeptides (2025-2026), Simplypeptides (various).
What percentage of UK research-peptide vendors are independently lab-tested?
Just 9%. The Peptide Watch found that only 30 of the 326 active UK research-peptide vendors it audits, about 9%, publish their own verifiable Janoshik certificate of analysis: a report from the independent laboratory Janoshik Analytical that names the vendor itself as the client and can be checked on Janoshik's own website. The other 91% (296 sellers) show no certificate, a borrowed one, a self-made in-house one, or one that cannot be independently verified.
Can The Peptide Watch prove a peptide is genuine, or what is really in the vial I receive?
No, and neither can anyone else from documents alone. Confirming what is actually in the vial you receive would require independently testing that exact unit; no certificate, and no website, can do that. What The Peptide Watch checks is the credibility of a seller's evidence: whether an independent laboratory is named, whether the certificate names the seller itself as the client, and whether it can be verified on the laboratory's own website. A genuine certificate proves a sample was tested once, not that your batch matches it. The Peptide Watch filters out fakes, borrowed certificates and undocumented sellers and so reduces uncertainty; it does not eliminate risk, and it is one signal to weigh alongside independent testing and consistent results across buyers over time.
What is Janoshik and why is a Janoshik COA the gold standard for research peptides?
Janoshik Analytical is an independent analytical laboratory widely used in the research-peptide industry to test compound identity and purity by HPLC and mass spectrometry. It is considered the gold standard because every genuine Janoshik test report carries a unique verification code that can be entered on Janoshik's official website (janoshik.com/verify) to confirm the report is authentic and unaltered, so a Janoshik certificate cannot be faked or edited, unlike a printed or screenshotted document.
Is there a UK laboratory that tests research peptides? Are UK peptides tested in the UK?
No verified certificate in this audit was issued by a UK laboratory. The independent labs that legitimate UK vendors actually use are based abroad, Janoshik Analytical in Prague, Czech Republic, and Analiza BiaΕek in Poland. When a UK seller claims testing by an unnamed 'accredited UK laboratory', there is no verifiable UK body behind the claim. The vendors that genuinely test send samples to Janoshik and publish a report that can be checked on Janoshik's own website.
What is a Certificate of Analysis (COA) for research peptides?
A Certificate of Analysis is a laboratory report stating what a specific batch of a peptide actually contains: the compound's identity, its purity (usually a percentage), and screening for contaminants such as heavy metals and bacterial endotoxins. Because peptide purity cannot be judged by sight, an independent COA is the only objective evidence of what is in a vial.
Why does it matter if a research peptide is independently tested?
Without an independent test there is no way to know what a vial actually contains. An untested peptide may be the wrong compound, a fraction of the labelled dose, or contaminated with heavy metals or bacterial endotoxins, none of which can be judged by appearance, price or packaging. An independent, verifiable certificate of analysis is the only objective evidence that the contents match the label.
How can I verify that a peptide Certificate of Analysis is genuine and belongs to the seller?
Check four things. First, an independent laboratory must be named (in-house testing does not count). Second, the certificate's client field must name the seller itself, not its supplier or another brand. Third, the test must be recent, because a certificate only covers the single batch that was tested. Fourth, you must be able to verify it on the laboratory's own website. If any of these fail, the certificate is not reliable evidence.
Why does the date on a peptide COA matter?
A Certificate of Analysis only covers the one batch that was tested. Research-peptide sellers re-order stock frequently, and each new batch is a separate production run that was never tested. A certificate from many months ago therefore says little about the vial shipped today. The more recent the certificate, the more likely the vial received is from the batch that was actually tested; an old or undated certificate carries little weight.
What does it mean when a peptide vendor displays a COA that names a different company?
It means the certificate is borrowed. Some sellers display a genuine Janoshik report to appear legitimate, but the client named on the certificate is their wholesale supplier or another brand, not the seller. Such a certificate proves a sample from someone else's production line was tested once; it is not evidence of what the seller itself ships.
How can I tell if a UK research-peptide vendor is trustworthy?
Find the vendor's Certificate of Analysis and confirm all of the following: it comes from a named independent laboratory (ideally Janoshik); the certificate names the vendor itself as the client; the test is recent; and it can be verified on the laboratory's website. If a vendor relies on in-house testing, an unnamed 'accredited UK lab', a 'COA on request' promise, a factory QC sheet, or a borrowed certificate, it does not meet this standard.
How many UK research-peptide vendors are there, and how many are independently tested?
The Peptide Watch has audited 428 UK research-peptide domains. Of these, 326 are active retailers, 59 are dead or parked, and 43 are out of scope. Among the active retailers, only 30 (about 9%) publish their own verifiable Janoshik certificate of analysis; the other 296 publish no certificate that can be independently verified in their own name.
What is The Peptide Watch?
The Peptide Watch is an independent UK research-peptide intelligence project. It audits every UK research-peptide website, records whether each publishes a certificate of analysis that can be verified in its own name, and re-checks them daily. The Peptide Watch does not sell peptides, takes no payment from vendors, and links to none of them, it publishes information, not advertising.
Methodology & about
The Peptide Watch audits every identifiable UK research-peptide website by opening each vendor's published certificates of analysis and reading the testing laboratory and the client named on the certificate, benchmarking its pricing against the market on a single common compound, BPC-157, expressed as Β£ per milligram, so every provider is compared like-for-like, and checking its advertising and operator links; and by re-scanning regularly. A vendor is listed as verified only when it publishes a Janoshik certificate that names the vendor itself as the client and can be verified on Janoshik's website. The Peptide Watch is independent, sells no peptides, accepts no payment from vendors, and links to none of them. Verdicts state observable facts. Research use only, no medical, therapeutic or health claims.
β οΈ Is anything on The Peptide Watch wrong or out of date? Submit a correction request and we'll look into it, vendors welcome too.