A certificate of analysis (COA) should be reviewed as part of routine incoming material verification for research peptides. It typically summarizes the product identity, analytical results, and release criteria used by the supplier.

What to check on a COA

  • Product name and catalog or lot number match the vial or package label.
  • Identity testing is supported by appropriate methods, such as mass spectrometry.
  • Purity or assay data are reported with the analytical technique used, often HPLC.
  • Dates for analysis and issue are present.
  • Acceptance criteria are stated, along with any deviations or remarks.

For laboratory use, it is also good practice to confirm that the COA is tied to the correct lot and that accompanying documentation matches your purchase record. If available, retain the COA with internal receiving records for traceability and audit readiness.

Research peptides and related materials are intended for laboratory research use only and are not intended for human consumption.