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 Kensingtonlabs (kensingtonlabs.co.uk), analysed 8 Oct 2025 (task #82451 on Janoshik's site); 1 verified seller holds one covering Kisspeptin, listed newest first below. Of the 379 active UK sellers we audit, 28 (7%) 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 379 active UK research-peptide sellers we audit, only 28 (7%) publish their own verifiable Janoshik certificate. Any of them is where you can actually verify testing, for Kisspeptin or any compound. A few: Lab77Peptides · Imperialpeptides · Regenix Peptides · Apex Pharma · Claripep · Novex 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 (1)

1. 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 1 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 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.

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