Before accepting a certificate of analysis (COA), confirm that it matches the product you ordered and contains enough data to support traceability and quality review.
Key checks
- Product identity: peptide name, catalog number, lot or batch number, and sample date.
- Analytical results: reported purity, assay values, and any impurity or related-substance data.
- Test methods: whether HPLC, mass spectrometry, or other validated methods were used.
- Reference standards: whether the method or acceptance criteria are stated clearly.
- Issuer details: laboratory name, analyst or reviewer identification, and date of issue.
Also look for internal consistency between the COA, product label, and shipping documents. If data are missing, unclear, or inconsistent, request clarification before using the material in research workflows. For laboratory purchasing and compliance review, documentation should support chain of custody and batch-level verification. Products are intended for research use only and are not intended for human consumption.