UK Research Peptide Retailer CoA Trust Index (July 2026 edition)

Observable Certificate of Analysis (CoA) transparency signals for the 25 UK research peptide retailers on the PeptideClear vetted directory: named trading entity (Companies House number), named testing lab, dedicated CoA page URL, per-batch CoA provision, CoA gating (none, email or order), QR-code lab verifiability and Trustpilot presence, with last-reviewed dates. Editorial dataset compiled by inspection of each retailer's public site against a published methodology. Published and maintained at https://peptideclear.co.uk/coa-trust-index/