Is Pureline Biolabs legit? An independent review
Pureline Biolabs is independently tested: its certificate is genuinely its own and verifiable, one of only 41 of 524 UK vendors that pass.
- Certificate
- Janoshik, in the seller's own name · 11 reports read · newest analysed 2 September 2026 · see the reports
- Official website
- purelinebiolabs.co.uk
- Payment
- Bank only
- Buyer reports
- Coming soon, visible from 1 November 2026 · tell us about your order
Checked daily against the seller's site, the laboratory's site and the public record. If this seller publishes new evidence, tell us and it is re-checked. Method · data · correction
New As of 13 October 2026 you can leave feedback on your order. Reports are being collected now and will be shown on this page from 1 November 2026, so every seller has the same time to gather them. Written notes appear only after we have read them.
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11 reports we opened on Janoshik's site
Each row was opened by a real page load on verify.janoshik.com and transcribed. The client column is the name the laboratory printed. Newest first. Audit findings, not recommendations.
| Task | Sample | Test | Client on the report | Received | Result | |
|---|---|---|---|---|---|---|
| #226522 | Retatrutide | purity | Pureline Biolabs Ltd. | 31 Aug 2026 | Retatrutide · 18.36 mg · 99.763% | verify |
| #226521 | Retatrutide | purity | Pureline Biolabs Ltd. | 31 Aug 2026 | Retatrutide · 13.51 mg · 99.515% | verify |
| #209947 | GHK-cu - 50mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | GHK-Cu · 52.64 mg (GHK 43.66 mg, copper 8.98 mg) · 99.700% | verify |
| #209946 | PT-141 - 10mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | PT-141 · 9.65 mg · 99.874% | verify |
| #209945 | KVP - 10mg | purity | Pureline Biolabs Ltd. | 22 Jul 2026 | KPV · 9.82 mg · 98.015% | verify |
| #209944 | Kisspeptin - 10mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | Kisspeptin · 10.60 mg · 99.890% | verify |
| #209942 | MOTS-c - 10mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | MOTS-c · 11.23 mg · 98.123% | verify |
| #209941 | Semax - 5mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | Semax · 5.28 mg · 98.938% | verify |
| #209940 | Selank - 10mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | Selank · 10.43 mg · 98.913% | verify |
| #209939 | Melanotan 1 - 10MG | purity | Pureline Biolabs Ltd | 22 Jul 2026 | Melanotan 1 · 8.13 mg · 99.805% | verify |
| #209938 | Ipamorelin - 5mg | purity | Pureline Biolabs Ltd | 22 Jul 2026 | Ipamorelin · 4.89 mg · 99.541% | verify |
How we read the certificate
Questions people ask about Pureline Biolabs
Is Pureline Biolabs legit?
On The Peptide Watch's independent audit, Pureline Biolabs (purelinebiolabs.co.uk) publishes its own verifiable Janoshik certificate of analysis that names Pureline Biolabs itself as the client, so its testing can be checked on Janoshik's own website. That is the strongest evidence standard we track. It confirms the credibility of the seller's evidence, not any individual vial you receive.
Does Pureline Biolabs publish a real Certificate of Analysis?
Yes. Its most recent own-name Janoshik certificate is dated Sep 2026 and can be verified on Janoshik's website by its unique code, so the purity result cannot be faked or edited.
How do I check Pureline Biolabs's certificate myself?
Find the certificate on purelinebiolabs.co.uk and read four things: an independent laboratory is named; the client field names Pureline Biolabs, not a supplier; the compound line names the peptide you are buying, not only a batch code; and the report opens on the laboratory's own website from its task number and key (verify.janoshik.com for Janoshik). Then compare the batch number on the report with the one on your vial. The free COA Checker on this site runs the first three checks on a photo of the certificate.
Show buyers you are independently verified
Pureline Biolabs is one of only 41 UK vendors whose testing The Peptide Watch could independently verify. If that is you, display this badge: it links back to this audit. No fee and no catch, verified vendors are welcome to use it. It keeps itself up to date: it shows as verified only while this listing is verified.
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