Prime Peptides publishes nothing on-site; a certificate is only promised 'on request', i.e. a document they'll email after you've paid, from a lab they won't name. By the time you could even look at it, you've already bought. It's an assurance designed never to be tested before purchase. Aggravating: pushes GLP-1 'pens'/weight-loss framing.
See the full audit. This is the short answer; the full Prime Peptides dossier has the certificate check with a live verification link, the Companies House record, pricing against the market and the complete checklist.
Prime Peptides (prime-peptides.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.
You cannot independently verify its testing today. A good delivery reputation is not the same as a verifiable certificate; the two are unrelated. Until Prime Peptides publishes an own-name certificate you can check on an independent lab's website, you are taking its quality on trust.
The Peptide Watch does not assert that. What is observable is the reason it sits on the watch list: 'coa on request', nothing published. Being unverifiable is a reason for caution, not proof of fraud.
Not one that can be independently verified in its own name. Nothing is published, it's only 'available on request', i.e. a document they'll email after you pay, from a lab they won't name. Unverifiable.