How We Score

Each vendor gets a 1-5 star rating (half stars allowed) in eight categories:

• Price
• Customer Service
• Shipping Speed
• Reputation
• CoAs & Lab Testing
• Website Usability
• Selection
• Education & Resources

Overall is the plain average of the eight, and the list is ordered by overall score. Ties are broken by CoA access.

Evidence we use

• Vendor sites, fetched Oct 7, 2026: public prices, policies, login walls, search, mobile layout
• Third-party CoA and testing records: Finnrick, Disclosed Labs, Peptigrity, and lab lookups such as Freedom Diagnostics, MDx and BioRegen
• Review platforms: Trustpilot (including removed profiles), Yelp, BBB, Knoji, Sitejabber
• Community discussion on Reddit and forums, treated as anecdotes because of affiliate and astroturfing risk
• Independent review sites such as compoundreview, Peptide Grades, PeptideClear and peptidestack

Where evidence is thin or not yet verified, we give a neutral score of about 3 and say so. Vendor-only claims count less than independently checkable ones. Vendors that don't sell directly are not ranked.

Every score shows its evidence so readers can judge for themselves.

All products discussed are for laboratory research use only.