Read the full COA guide
PeptideTech · Research document worksheet · 2 October 2026

Peptide COA document checklist

Record what a certificate of analysis actually establishes, match it to the product and lot, and preserve the questions that remain open. Use this sheet beside the complete original report.

A certificate describes a tested sample and the reported analytical scope. This checklist does not certify a current batch, supplier, clinical safety or suitability for use in people or animals. Research listings are for laboratory research.
Product, labeled amount and form
Supplier / original document URL
Product lot / report sample identifier
Issuing laboratory / report or task number
Report date / retrieval date
Reviewer / research requirement

1. Match identity and lot

  • Compound name, formulation, labeled amount and form match the material being assessed.
  • The product lot and report lot or sample identifier agree; any missing identifier is recorded.
  • For a blend, each named component and ratio is checked against the label.

2. Preserve the complete report

  • Retain the original readable document, source URL, report date and retrieval date.
  • Check all pages, laboratory identity, report number and sample description.
  • Keep historical or different-lot evidence labeled as such.

3. Check the issuing laboratory

  • Find the laboratory’s official site independently of the supplier’s document link.
  • Use the laboratory’s verification service where available; compare identifiers and results.
  • If verification is unavailable or differs, ask the issuing laboratory through its official contact route.

4. Read identity, amount and purity separately

  • Identify which methods and results address the compound’s identity.
  • Read quantitative content with its units and chemical basis; separate the labeled amount from a measured result.
  • Read chromatographic purity as a result under its stated method, rather than milligrams in the container.

5. Match the analytical scope

  • Methods, units and reported results address the actual research requirement.
  • Record unreported properties as unknown; a purity percentage does not establish sterility or endotoxin results.
  • A tested sample does not establish that every container in the lot was sampled.

6. Resolve discrepancies and retain limits

  • Record mismatched lots, names, quantities, missing fields or unreadable/cropped evidence.
  • Request clarification rather than filling an information gap with a favorable assumption.
  • Revisit the document if the supplied product, formulation or delivered lot changes.

Open questions / clarification requested / verification result and date