Research peptide retailer
Peptide Works
Conduct flag on file
CoAs are freely downloadable PDFs, lab-tested by Janoshik with a QR code verifiable at janoshik.com/verify/, but the certificate's own Batch field is left blank so it reads as one representative test per product rather than a true per-batch document.
Headline price
Not disclosed
Regulated as
Not disclosed
Delivery area
Not disclosed
Certificate of Analysis profile
Trust Index status
CoA: partial80/100 · B+
Founded
Not disclosed
Companies House
Not disclosed
Business Transparency
Not established
Last verified
2026-08-19
No UK trading entity found
We searched UK Companies House thoroughly (exact name, exact phrase, and plausible variants) and found no matching registration, despite this site presenting as UK-based. This caps the CoA tier below green regardless of score. It is not proof of wrongdoing, only that we could not confirm who operates this business: see methodology.
- ⚠ Sells peptides in capsule or tablet form, which is oral dosing by design
- ⚠ Publishes benefit claims next to products despite research-only framing
- ⚠ No UK trading entity could be found despite a thorough search, though the site presents as UK-based
CoA library: https://peptide-works.com/third-party-testing-certificates/
Re-checked on a rolling basis, not a fixed monthly cycle; see the last-verified date above. See methodology for how this is scored.
Separate from the CoA score
Responsible Practice assessment
Material concerns- · Addresses a named patient population directly ('...Help Diabetic Patients?') in consumer-advice Q&A format.
- · Benefit-claim language observed on site: "How can ARA-290 Peptide Help Diabetic Patients?"
We assess what a brand publishes and makes available to customers, not its intentions. Full framework and what each status means: how we assess brands. Think this is wrong? Email [email protected] with evidence.
Not yet Independently Verified
The CoA tier and Responsible Practice status above are free and mechanical. Nobody, including Peptide Works, has paid for the deeper lab-accreditation, batch-traceability, and corporate-history checks yet. Request that it be run →
Our verdict
Last reviewed 2026-08-19. PeptideClear earns nothing when readers click through, and this link carries no tracking. Editorial criteria are documented in our methodology.
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