Site answer
Which vendor should I buy from?
pepmg doesn't pick a vendor for you. What it gives you is two things side by side: every table sorts by price per milligram, and each vendor's Vendor Score shows what it publishes about lab testing and about itself.
Open the compound's table, compare the price per milligram with the Trust score and COAs columns, and check the vendor's own listing before relying on it.
From: Methodology › Ranking
All help topics · Answers restate pepmg's own pages; the linked section is the authority.