The Peptide Watch is an independent UK watchdog for the research-peptide market. We check whether a vendor's testing is real, by opening the actual certificate of analysis it publishes and reading who tested it and whose product it names, and we publish the verdict, with the evidence, for every identifiable UK seller.
A certificate of analysis is only meaningful when an independent laboratory tested that seller's own batch and you can verify it. We treat Janoshik Analytical as the gold standard because its reports carry a unique code checkable on Janoshik's own website and cannot be faked. A vendor is listed as independently tested only when it publishes a Janoshik certificate that names the vendor itself as the client. Everything else, in-house tests, borrowed supplier certificates, lesser labs, "COA on request", fabricated documents, goes on the watch list, with the specific reason shown.
We sell no peptides. We take no payment from any vendor to appear, rank, or be removed. We link to no vendor's shop. Every verdict states an observable fact, from the vendor's own website, the certificate it published, or the public record, and any vendor can request a correction.
We evaluate the credibility of a seller's evidence, not the product itself. No document, and no website including this one, can prove what is in the specific vial you receive; that would require independently testing the exact unit. Even a genuine certificate only proves a sample was tested once, not that your batch matches it. We reduce uncertainty and filter out fakes, borrowed certificates and undocumented sellers, we don't certify products or eliminate risk. Treat us as one strong signal, weighed alongside independent testing and consistent results over time.
The COA Checker lets anyone upload a certificate for an instant, independent read. Our full audit is also published as a machine-readable dataset, free to cite with attribution.