Buyer-side resource
Asia peptide supplier screening checklist
Use this to screen a peptide or API supplier before a first PO moves. The point is not to prove perfection. It is to separate what is verified, what is claimed, and what still needs escalation.
Checklist
1. Confirm the legal entity behind the quote
Compare the company name, address, website, domain ownership, invoice entity, and banking details. If those do not line up cleanly, stop assuming you know who the supplier is.
2. Separate manufacturer claims from trading or sales language
Ask what the site actually manufactures, what is subcontracted, and which legal entity owns the process. “Factory” language in a deck is not the same thing as verified manufacturing scope.
3. Review the COA for batch specificity and method plausibility
Look for product-specific methods, real batch identifiers, dates that line up, and sensible result presentation. Generic or recycled-looking COAs are a reason to ask harder questions.
4. Treat GMP claims as a qualification topic, not a slogan
Ask which site, which process, which authority, and whether the claim applies to the quoted material. “GMP” alone is too vague to rely on for procurement decisions.
5. Check traceability before funds move
Ask what documents can tie the quote, batch, testing, and manufacturing story together. If the supplier cannot show a coherent paper trail, uncertainty is still high.
6. Decide whether to escalate
If the order size, category risk, or documentation gaps justify it, escalate to deeper review: independent testing coordination, on-site verification, or both.