Is SupplyPeptides legit? An independent review
SupplyPeptides is on the watch list: its certificate can't be verified in its own name, one of 483 of 524 UK sellers that fail this check.
- Certificate
- none found in its own name
- Official website
- supplypeptides.co.uk
- 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
What we found
supplypeptides.co.uk describes itself in its footer as a 'UK Registered Business' with UK warehouse dispatch, but no matching Companies House entry was found under 'SupplyPeptides' as of 3 September 2026, so the registration claim is unverified. It claims HPLC and mass-spec testing on every batch with a searchable COA library, but names no independent laboratory anywhere on-site. Stays on the watch list until both the company registration and a named lab can be checked.
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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Questions people ask about SupplyPeptides
Is SupplyPeptides legit?
SupplyPeptides (supplypeptides.co.uk) is on The Peptide Watch's watch list. It does not publish a certificate of analysis that can be independently verified in its own name, so its quality claims rest on trust rather than checkable evidence. That is not proof of a scam; it means the evidence does not check out.
Does SupplyPeptides publish a real, verifiable Certificate of Analysis?
Not one that can be independently verified in its own name. It calls itself a 'UK Registered Business' and claims every batch is 'HPLC-tested to ≥99% purity and mass-spec verified' with a 'COA library', but never names the laboratory and no matching Companies House entry was found for the claimed registration.
How do I check SupplyPeptides's certificate myself?
Find the certificate on supplypeptides.co.uk and read four things: an independent laboratory is named; the client field names SupplyPeptides, 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.