To audit laboratory supply quality control for research peptides, labs should review both the supplier’s testing workflow and the documentation that supports each lot.
Key points to check
- Identity testing: Confirm that the supplier uses appropriate methods such as mass spectrometry to verify the expected molecular mass and sequence.
- Purity assessment: Look for HPLC-based purity data with clear chromatograms, integration details, and stated acceptance criteria.
- COA completeness: A Certificate of Analysis should list lot number, test methods, results, date of analysis, and any relevant specifications.
- Traceability: Verify that the lot can be linked to manufacturing records, raw materials, and final release documentation.
- Handling controls: Evaluate packaging, shipping conditions, and storage guidance to reduce degradation during transit and receipt.
Labs should also confirm whether deviations, retesting, or out-of-specification results are documented and investigated. For research procurement, it is also important that products are labeled for research use only and are not intended for human consumption.