A Certificate of Analysis (COA) for research grade peptides should give laboratory buyers enough data to assess identity, purity, and documentation quality before use in a research workflow.
Key items to review
- Peptide name and catalog or lot number
- Sequence information and calculated molecular weight
- Test results for identity and purity, often reported by HPLC and mass spectrometry
- Observed purity percentage with the stated analytical method
- Batch date and lot-specific traceability
- Storage conditions and any shipping notes
- Manufacturer or supplier details
For research purchasing teams, the most useful COAs are lot-specific, clearly dated, and consistent with the product label and accompanying documents. If a COA is incomplete, ambiguous, or does not match the shipped material, it should be reviewed before the peptide is accepted into inventory.
As with all laboratory materials, these products are intended for research use only and are not intended for human consumption.