PUREPEPTIDEHUB · FREE CHECKLIST

Peptide COA verification checklist

Check the issuer, sample, batch and limits of a laboratory report.

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• Find the issuing laboratory through its official website. Open its verification service or contact it directly; do not rely on a seller's screenshot.
• Compare the report ID, version, dates, sample description and results with the issuer's complete record. A failed lookup alone does not prove a forgery.
• Match the sample and lot to your material. If identifiers differ, request a documented link rather than assuming the report covers your vial.
• Separate identity, chromatographic purity, measured amount, sterility and endotoxin. An omitted result is missing information, not a pass.
• Read the method, units and reporting limits beside each result. Peak-area purity is not automatically the peptide's percentage by weight or amount per vial.
• Check any accreditation claim against the current accreditation-body record and the exact method scope.
• Record what remains unresolved and ask the issuer specific questions. A genuine report does not establish clinical safety or every vial's contents.

Sources and further reading

1. Full sourced COA guide
2. MZ Biolabs: what purity testing does not measure

Prepared 14 October 2026. Educational information only. This checklist does not establish clinical safety or recommend a medicine, dose or treatment.