How to Vet a Peptide Vendor

Confirm the product record

Check the exact compound, formulation, strength, product label and current product URL. Testing is most useful when it can be tied to the actual product and lot being offered rather than a generic certificate gallery.

• Exact product and formulation identified
• Lot or batch can be matched
• Current product information is accessible

Look for distinct testing evidence

Identity testing, purity testing, sterility testing and endotoxin testing answer different questions. Third-party laboratory evidence, named methods and lot-specific results are more useful than broad marketing claims.

• Identity method named where available
• Purity method and result shown
• Sterility or endotoxin data considered separately where relevant

Check COA traceability and recency

A usable COA identifies a laboratory or issuer, lot, report or test date, method, specification and result. Compare its dates and lot number with the current product. A document can be genuine and still not be a match for the item being sold now.

Assess transparency, not a score

Useful vendor information may include product-specific COAs, batch details, testing links, labeling, fulfillment information and a clear route for questions. FEMETRIC does not turn these facts into a star rating, winner or universal vendor ranking.

Separate direct experience from documents

Where FEMETRIC has documented direct ordering experience, it is labeled as such. Where it has not, the directory does not imply an order was placed. Documents and direct experience are different kinds of information.