Optimal Lab names Janoshik, but only as 'our supplier Janoshik', its supplier's testing, not a certificate commissioned in Optimal Lab's own name, and per-lot certificates are 'available on request' rather than published. No purity figures and no company registration are shown, so nothing about its stock can be independently verified. Newport, South Wales; sells BPC-157, TB-500, retatrutide and NAD+ with UK Royal Mail Tracked 24 dispatch.
See the full audit. This is the short answer; the full Optimal Lab dossier has the certificate check with a live verification link, the Companies House record, pricing against the market and the complete checklist.
Optimal Lab (optimallab.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 Optimal Lab 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. Optimal Lab names Janoshik only as its supplier's testing, not a certificate commissioned in its own name, and offers per-lot certificates 'on request' rather than published, so there is nothing you can independently ver