Where to buy Kisspeptin (kisspeptin-10, kisspeptin-54, metastin) in the UK: the sellers with a verifiable COA
The newest verifiable Kisspeptin certificate on any UK seller's website is on Peptology Labs (peptologylabs.uk), analysed 18 Sep 2026 (task #233894 on Janoshik's site); 5 verified sellers hold one covering Kisspeptin, listed newest first below.
A record of paperwork, not a recommendation: The Peptide Watch sells nothing, takes no money from sellers and links to none of them.
Who has the newest report · Why the date matters · What purity means · What Kisspeptin is · Regulators · Every report
Who holds the newest Kisspeptin report (5 verified UK sellers)
Newest report first. Every report was opened on Janoshik's own website and names the seller as the client. The date is the analysis date printed on the report. The verify link opens the laboratory, never the shop. Audit findings, not recommendations.
| Seller | Newest Kisspeptin report | Age of that report | Purity on it | |
|---|---|---|---|---|
| Peptology Labs | 18 Sep 2026 | 25 days | 99.430% | verify |
| Pureline Biolabs | 22 Jul 2026 | 2 months, 21 days | 99.890% | verify |
| Biohackpeptides | 21 May 2026 | 4 months, 22 days | 99.838% | verify |
| Clinicore | 16 Jan 2026 | 8 months, 27 days | 99.510% | verify |
| Kensingtonlabs | 8 Oct 2025 | 12 months, 5 days | 99.575% | verify |
Every Kisspeptin purity report we have read (5), one row per report
The 5 verifiable Kisspeptin certificates we have read, newest first
Each row was opened on Janoshik's own site by a real page load and transcribed. The client column is the name the laboratory printed; a certificate counts as a seller's own only when that name is the seller. The report date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The verify link opens the laboratory, never the shop. Audit findings, not recommendations.
| Seller | Task | Client on the report | Report date | Result | Batch | |
|---|---|---|---|---|---|---|
| Peptology Labs | #233894 | Peptology Labs | 18 Sep 2026 | Kisspeptin-10 · 9.94 mg · 99.430% | KS9274 | verify |
| Pureline Biolabs | #209944 | Pureline Biolabs Ltd | 22 Jul 2026 | Kisspeptin · 10.60 mg · 99.890% | PLB-010 | verify |
| Biohackpeptides | #162924 | BiohackPeptides.co.uk | 21 May 2026 | Kisspeptin · 5.79 mg · 99.838% | BHP26EKS5 | verify |
| Clinicore | #99980 | clinicore | 16 Jan 2026 | Kisspeptin · 12.40 mg · 99.510% | kiss10-101 | verify |
| Kensingtonlabs | #82451 | Kensingtonlabs.co.uk | 8 Oct 2025 | Kisspeptin · 5.38 mg · 99.575% | KIS-298XW | verify |
Why the date on a certificate matters
What a purity figure means
The purity on a Janoshik report is the share of the main peak in an HPLC chromatogram. 99.5% means that 99.5% of what the detector saw was one substance and 0.5% was something else. It is not the amount in the vial: that is the separate quantity line, in milligrams. It does not by itself prove which substance the peak is: that is identity, confirmed by mass spectrometry. And it says nothing about sterility, endotoxins or heavy metals, which are separate tests.
A purity figure printed on a shop page with no report behind it is a claim, not a measurement. Between two reports, the difference that matters is rarely 99.2% against 99.8%; it is whether the report exists at all, names the seller as the client, covers this compound on its own, and is recent.
What Kisspeptin is, and what it is sold as
Kisspeptin is the hypothalamic hormone that starts puberty and drives the reproductive axis, discovered in 1996 as a cancer metastasis-suppressor gene product. UK hospital trials have used a single injection of kisspeptin-54 to trigger egg maturation in IVF; no kisspeptin product is a licensed medicine anywhere, and WADA bans it in sport.
| Development status | In clinical trials, no approval. Academic phase 2 trials of kisspeptin-54 in IVF at Imperial College; MVT-602 completed phase 2a. Nothing filed for approval. |
|---|---|
| Originator | Lee and colleagues, Penn State College of Medicine, Hershey, 1996 (the KiSS-1 gene); its reproductive role by the de Roux and Seminara groups, 2003. Rights: No rights holder for the natural peptide. The analogue MVT-602 (formerly Takeda's TAK-448) belongs to Sumitomo Pharma through Myovant Sciences. |
| Registered clinical trials | 36 on ClinicalTrials.gov |
A hormone discovered as a cancer gene, now a standard tool in reproductive research. The KiSS-1 gene was found in 1996 at Hershey, Pennsylvania, as a suppressor of melanoma spread, and named after the town's chocolate; in 2003 two groups showed its product is the switch that starts puberty. PubMed indexes 3,372 papers, 1,266 of them in rodents, and 62 clinical-trial reports, nearly all academic physiology studies that infuse kisspeptin-10 or kisspeptin-54 under hospital supervision. ClinicalTrials.gov lists 36 registered studies, led by Massachusetts General Hospital and Imperial College London.
The UK trials are the reason it sells. At Hammersmith Hospital a single injection of kisspeptin-54 was used to trigger egg maturation in IVF in three trials between 2014 and 2017, the largest with 62 women at high risk of ovarian hyperstimulation. A synthetic analogue, MVT-602, completed a phase 2a study with Myovant, now part of Sumitomo Pharma. No kisspeptin product has been submitted for approval anywhere; what sellers offer as a testosterone or fertility aid is a hospital research infusion in a vial.
Status. Not a licensed medicine in any country, and the electronic medicines compendium lists no UK product. The 2026 WADA Prohibited List bans kisspeptin and its agonist analogues at all times. The two purity reports we read recovered 5.79 mg and 10.60 mg per vial, both above 99.8% purity.
The published record in numbers, and the sources
| Papers on PubMed | 3372 |
|---|---|
| Indexed as rat or mouse studies | 1266 |
| Indexed as clinical trials | 62 |
| Published since 2020 | 1388 |
Counts are from PubMed on 15 September 2026 using the queries recorded in our evidence file. A description of the published record, not medical advice and not an argument for or against use.
- Kisspeptin-54 triggers egg maturation in women undergoing in vitro fertilization. (J Clin Invest, 2014, PMID 25036713)
- Efficacy of Kisspeptin-54 to Trigger Oocyte Maturation in Women at High Risk of Ovarian Hyperstimulation Syndrome (OHSS) During In Vitro Fertilization (IVF) Therapy. (J Clin Endocrinol Metab, 2015, PMID 26192876)
- A second dose of kisspeptin-54 improves oocyte maturation in women at high risk of ovarian hyperstimulation syndrome: a Phase 2 randomized controlled trial. (Hum Reprod, 2017, PMID 28854728)
- Endocrine profile of the kisspeptin receptor agonist MVT-602 in healthy premenopausal women with and without ovarian stimulation: results from 2 randomized, placebo-controlled clinical tricals. (Fertil Steril, 2024, PMID 37925096)
- Kisspeptin Administration Stimulates Reproductive Hormones but Does Not Affect Anxiety in Humans. (J Clin Endocrinol Metab, 2025, PMID 40036336)
- Using Kisspeptin to Predict Pubertal Outcomes for Youth With Pubertal Delay. (J Clin Endocrinol Metab, 2020, PMID 32232399)
- KiSS-1, a novel human malignant melanoma metastasis-suppressor gene. (J Natl Cancer Inst, 1996, PMID 8944003)
- Imperial College London, kisspeptin fertility trial news
- ClinicalTrials.gov NCT01667406, kisspeptin in IVF (Imperial College)
- WADA, 2026 Prohibited List (S2: peptide hormones, growth factors, related substances and mimetics)
- electronic medicines compendium, UK product search for kisspeptin
What regulators say about Kisspeptin
In the UK. Not a licensed medicine; no UK product on the emc. Sold as a research chemical. Prohibited in sport.
We hold no statement from the FDA, MHRA or EMA specifically about Kisspeptin on file. Its development and licence sources are listed under the record above.
What the 5 Kisspeptin certificates show
We have read 5 Janoshik reports covering Kisspeptin, published by 5 UK sellers. Each was opened on Janoshik's own website. All 5 name the seller itself as the client. 3 of the 5 are dated within the last six months and 1 is more than a year old. The newest is dated 18 Sep 2026 and the oldest 8 Oct 2025.
All 5 reports give a purity figure for Kisspeptin. The figures run from 99.430% to 99.890%, and all 5 are at 99% or above. A purity figure describes the sample the laboratory received, not every vial from that batch.
Read directly from the newest reports: Peptology Labs: task #233894, analysed 18 Sep 2026, 9.94 mg recovered at 99.430%, client Peptology Labs; Pureline Biolabs: task #209944, sample received 22 Jul 2026, 10.60 mg recovered at 99.890%, client Pureline Biolabs Ltd; Biohackpeptides: task #162924, sample received 21 May 2026, 5.79 mg recovered at 99.838%, client BiohackPeptides.co.uk.
A certificate is a batch document. The lines that matter are the compound (it must say Kisspeptin, not only a batch code), the client (the shop, not its supplier) and the analysis date. A new batch is untested until a new report appears.
Kisspeptin in the UK at a glance
| Active UK sellers listing Kisspeptin | 7 |
|---|---|
| Of which publish a verifiable own-name certificate | 5 |
| Of which name no laboratory at all | 1 |
Counted from the vendor ledger at build time. The A-Z directory lists every seller and what each publishes instead.
Questions people ask
Which UK sellers publish a verifiable Janoshik certificate naming Kisspeptin?
As of 13 October 2026, 5: Peptology Labs, Pureline Biolabs, Biohackpeptides, Clinicore, Kensingtonlabs. Each has a report on Janoshik's own website that names the seller as the client and lists Kisspeptin. That is a statement about paperwork, not a recommendation; The Peptide Watch does not recommend anywhere to buy Kisspeptin.
How recent is the newest Kisspeptin certificate from a UK seller?
The newest we have read is Janoshik task #233894, analysed 18 Sep 2026. It is published by Peptology Labs and names it as the client. A certificate covers one batch, so an old one says little about stock on sale today.
How do I check that a certificate for Kisspeptin is genuine?
Four things: an independent laboratory is named; the client field names the seller you are buying from, not a supplier; the compound line says Kisspeptin; and the report's task number and key open the same report on the laboratory's own website (verify.janoshik.com). A branded PDF with no laboratory name and no verification code fails on the first check, however professional it looks. The free COA Checker on this site runs the checks for you.
Is Kisspeptin a licensed medicine in the UK?
Not a licensed medicine; no UK product on the emc. Sold as a research chemical. Prohibited in sport. Academic phase 2 trials of kisspeptin-54 in IVF at Imperial College; MVT-602 completed phase 2a. Nothing filed for approval. The Peptide Watch does not give legal or medical advice.
Why does The Peptide Watch not say where to buy Kisspeptin?
Because the site records paperwork, not recommendations. A verifiable certificate proves that a sample of one batch was tested. It does not prove the vial you receive matches it, and it says nothing about whether anyone should use Kisspeptin. Listing which sellers publish a certificate you can check, and which publish nothing, is as far as the evidence goes.
The Peptide Watch's position on Kisspeptin
Not a licensed medicine; no UK product on the emc. Sold as a research chemical. Prohibited in sport. The Peptide Watch reads the certificates UK sellers publish and does not recommend anywhere to buy Kisspeptin. Sellers on this page are listed by the date of their newest Kisspeptin certificate and by nothing else. If you can verify a seller's testing, you can at least judge its evidence; if you cannot, you are taking the seller's word for what is in the vial. See how UK testing compares across every seller in the market statistics.
An honest note: a verifiable certificate proves a sample of a batch was tested, not that the specific vial you receive matches it, see what this can and can't tell you. The Peptide Watch sells no Kisspeptin and links to no shop; this is research-use-only information, not medical or dosing advice.
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