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. Of the 450 active UK sellers we audit, 38 (8%) publish their own verifiable Janoshik certificate of analysis, and this page lists which of them hold one covering Kisspeptin, newest certificate first. It is a record of paperwork, not a recommendation: The Peptide Watch sells nothing, takes no money from sellers and links to none of them. 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. Purity and identity cannot be judged by eye, so an independent certificate you can check is the only real proof of what is in the vial.

The one test that matters for Kisspeptin

Ignore the marketing. The question is simple: does the seller publish a verifiable Janoshik certificate that names the seller itself as the client? If it does, you can confirm an independent lab tested that batch. If it shows an in-house document, a borrowed certificate, or "COA on request", you cannot. Learn the two-minute check in how to verify a Janoshik COA.

Which UK sellers publish a verifiable COA

Of the 450 active UK research-peptide sellers we audit, only 38 (8%) publish their own verifiable Janoshik certificate. Any of them is where you can actually verify testing, for Kisspeptin or any compound. A few: Lab77Peptides · Peptology Labs · Biovanta · Camo Chem · Biohackpeptides · Zenic Labs. See the full independently-tested list, or check a specific shop's certificate with the free COA Checker.

Verified UK vendors with a confirmed Kisspeptin Janoshik certificate (5)

1. Peptology Labs peptologylabs.uk · newest Kisspeptin report 18 Sep 2026 · task #233894
2. Pureline Biolabs purelinebiolabs.co.uk · newest Kisspeptin report 22 Jul 2026 · task #209944
3. Biohackpeptides biohackpeptides.co.uk · newest Kisspeptin report 21 May 2026 · task #162924
4. Clinicore clinicore.co.uk · newest Kisspeptin report 16 Jan 2026 · task #99980
5. Kensingtonlabs kensingtonlabs.co.uk · newest Kisspeptin report 8 Oct 2025 · task #82451

Audit findings, not recommendations. Every entry is a report covering Kisspeptin that we opened on Janoshik's own site and that names the seller itself as the client; the date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The table below is the same ledger in full, so the two always agree. Not exhaustive: a vendor whose Kisspeptin report we have not yet read is not listed.

The 7 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.

What the 7 Kisspeptin certificates show

We have read 7 Janoshik reports covering Kisspeptin, published by 5 UK sellers. Each was opened on Janoshik's own website. All 7 name the seller itself as the client. 5 of the 7 are dated within the last six months. The newest is dated 21 Sep 2026 and the oldest 8 Oct 2025.

5 of the reports give a purity figure for Kisspeptin. The figures run from 99.430% to 99.890%, and all 5 are at 99% or above. 2 reports test for heavy metals or endotoxins instead. 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.

Questions people ask

Kisspeptin in the UK at a glance

Counted from the vendor ledger at build time: a seller is included when its audit records Kisspeptin in its certificates or its catalogue notes. Audit findings, not recommendations.

The other 2 sellers: what they publish instead

• No named lab, nothing to verify: 1
• No testing claim found: 1

Each pattern is explained on the seller's own audit page, with what we saw and the date. The A-Z directory lists every seller.

The market for Kisspeptin in the UK

Advertising. Google's Ads Transparency Centre shows 1 of these sellers running ads: Kensingtonlabs. Paid reach is where a new buyer meets a brand before meeting any certificate.

Companies. 6 of the 7 can be matched to a Companies House record; the median company is 10 months old and 4 were incorporated within the last year. A seller with no traceable company is not necessarily dishonest, but there is nobody to hold to its certificate.

Reviews. 2 of the 7 have a Trustpilot profile with a score; the median is 4.8, 2 sit at 4.5 or above and 0 below 3.0. A review score says who collects reviews, not who tests, which is why it sits next to a certificate and never instead of one.

Changes among Kisspeptin sellers

• 2026-10-02 Renova Peptides (renovapeptides.co.uk) added to the audit on the watch list.
• 2026-09-28 Clinicore (clinicore.co.uk) added to the audit on the verified list.
• 2026-09-15 Kensingtonlabs (kensingtonlabs.co.uk) published a newer own-name certificate (now May 2026).

From the site changelog, which also runs as a JSON feed.

What the research shows for Kisspeptin, and what it does not

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.

Who owns Kisspeptin, and where it stands

Counts are from PubMed on 15 September 2026 using the queries recorded in our evidence file; "clinical trial" is PubMed's own publication-type index. This is a description of the published record, not medical advice and not an argument for or against use.

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.

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