Independent, methodology-driven ratings of research peptide companies. Scored across seven weighted criteria. No vendor pays for placement.
Best-in-class purity verification. Each batch HPLC-tested with documentation. Premium pricing reflects the rigor.
Strong value proposition with broad catalog. COAs available on request rather than published by default.
Consistently high COA transparency and third-party testing. Pricing skews premium but defensible given purity track record.
Newer entrant punching above weight class. Clean documentation and modern e-commerce experience.
Global reach with competitive pricing. Shipping times vary significantly by region.
Long-running domestic vendor with fast shipping. Testing rigor has lagged behind newer competitors.
Sources include vendor-published certificates of analysis, independent HPLC verification on randomly selected batches, mystery-shop orders placed quarterly, and aggregated structured user reports from verified buyers.