Regenixresearch claims an 'accredited' or 'UKAS-verified UK laboratory' but never names it. Accreditation you can't attribute to a named body is unfalsifiable, the word 'accredited' is doing PR work with nothing checkable behind it. (Note: Janoshik isn't even UK-based, so 'UK lab' is a tell it isn't them.)
See the full audit. This is the short answer; the full Regenixresearch dossier has the certificate check with a live verification link, the Companies House record, pricing against the market and the complete checklist.
Regenixresearch (regenixresearch.com) 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 Regenixresearch 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: hides behind an 'accredited uk lab'. Being unverifiable is a reason for caution, not proof of fraud.
Not one that can be independently verified in its own name. They claim an 'accredited UK laboratory' but never name it, an unnamed lab can't be looked up, contacted or checked, so it's a marketing line, not proof.