PEPTIDE CERTIFICATE OF ANALYSIS: READER'S CHECKLIST
PurePeptideHub | Updated September 17, 2026
Guide: https://purepeptidehub.com/resources/understanding-coas

Use this worksheet for your own notes. It is not a laboratory report,
approval, clinical assessment or a guarantee about a product. Keep the
original report unchanged. Mark missing information as missing, not passed.

REPORT AND SAMPLE
[ ] Laboratory name and independently located contact details recorded.
[ ] Report number and version: __________________________________________
[ ] Sample identifier and description: _________________________________
[ ] Batch/lot on report matches supplied material: _____________________
[ ] Receipt/test/report dates and all report pages checked.
[ ] Bulk material or finished unit identified: _________________________
[ ] Who selected and submitted the sample? _____________________________
[ ] Sampling method or representativeness documented, or marked unknown.

READ EACH RESULT SEPARATELY
Record the method, result, units, acceptance criterion and any limitation.

Identity evidence: _____________________________________________________
Chemical purity: _______________________________________________________
Measured content or amount: ____________________________________________
Sterility: _____________________________________________________________
Bacterial endotoxins: ___________________________________________________
Other tests actually reported: _________________________________________
Missing tests or unclear result basis: _________________________________

[ ] HPLC peak-area purity is distinguished from content by weight.
[ ] No vial amount is inferred from a purity percentage alone.
[ ] Water/counterions and assay basis clarified where relevant.
[ ] Identity or HPLC results are not treated as sterility results.
[ ] Sterility and bacterial endotoxins are recorded as separate tests.
[ ] A compliance statement is read against its listed tests and limits.

VERIFY WITH THE ISSUING LABORATORY
[ ] Complete, current report and matching sample/lot confirmed.
[ ] QR-code destination or verification service checked independently.
[ ] Unclear methods, acceptance limits and subcontracted tests queried.
[ ] Any claimed accreditation and relevant scope checked with its body.
[ ] Unresolved mismatches and the laboratory's response saved locally.

Questions still to resolve: ____________________________________________
_______________________________________________________________________
_______________________________________________________________________

BEFORE SHARING
[ ] Keep the original private copy; redact a separate sharing copy.
[ ] Remove personal details, order details and private verification tokens.
[ ] Obtain permission where needed and disclose a commercial connection.
[ ] Explain sample type, test methods, results and remaining uncertainties.
[ ] Do not present the report as proof of safety or suitability for use.

Compare laboratory services: https://purepeptidehub.com/labs
Sharing guide: https://purepeptidehub.com/community/sharing-lab-results

SOURCE NOTES
The linked guide includes a fictional teaching example, not a real COA.
Its source notes include WHO's model certificate, Bachem's explanation of
peptide analysis, FDA testing guidance and ILAC accreditation information:
https://www.who.int/publications/m/item/trs1010-annex4
https://www.bachem.com/knowledge-center/faq-frequently-asked-questions/
https://www.fda.gov/regulatory-information/search-fda-guidance-documents/pyrogen-and-endotoxins-testing-questions-and-answers
https://ilac.org/about-ilac/

VERIFICATION AND TRACEABILITY — updated 20 September 2026
[ ] Start from the issuing laboratory’s official website, not only the QR code.
[ ] Match report number, version, sample, lot, methods and results.
[ ] A failed lookup remains unresolved until checked with the issuer.
[ ] If the lot differs, request a documented cross-reference or the correct report.
[ ] Keep authenticity, batch relevance and missing tests as separate findings.
Official lookup links: https://purepeptidehub.com/resources/understanding-coas#verify-coa