Is Sigma Labs UK legit? An independent review
Sigma Labs UK checked 25 September 2026: sigmalabsuk.net is a live site selling a mix of prescription-adjacent products (weight-loss injections, TRT, PCT medications) alongside peptides. No testing-lab name or certificate of analysis appears anywhere on the site. The site states card payments are "currently suspended... until new system in place", leaving cryptocurrency as the only working payment method, and contact runs through a Telegram support group with no physical address given; no Companies House match was found searching "Sigma Labs UK". What would move this listing: a verifiable Janoshik (or other named-lab) report printing Sigma Labs UK as the client, or a found company registration.
Verified facts at a glance
| Fact | What we found | How it was checked |
|---|---|---|
| Certificate | nothing we could verify in this seller's own name, details below | read on the seller's own site |
- A certificate that verifies in this seller's own name on an independent laboratory's website
- Any certificate from a named independent laboratory on the pages we audited
Is Sigma Labs UK legit? The questions people ask
Is Sigma Labs UK legit?
Sigma Labs UK (sigmalabsuk.net) 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 Sigma Labs UK publish a real, verifiable Certificate of Analysis?
Not one that can be independently verified in its own name. ⚠ No testing claim, no company registration found. Sigma Labs UK (sigmalabsuk.net) is a UK-facing storefront selling weight-loss injections, peptides, HGH, testosterone-replacement-therapy products and post-cycle-therapy medications.
How do I check Sigma Labs UK's certificate myself?
Find the certificate on sigmalabsuk.net and read four things: an independent laboratory is named; the client field names Sigma Labs UK, 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.
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How every seller is judged: methodology. This audit as data: /data/vendor/sigmalabsuk-net.json, re-checked daily. All 41 sellers whose certificate can be checked: the verified list.