Batch Documentation Checklist
A checklist of what documentation should accompany every peptide batch for full transparency.
Last updated: 13 April 2026
Essential documentation
Every batch should include: batch number and date, compound identity (sequence, modification), purity data (HPLC, method, figure), mass confirmation (MS or calculated), endotoxin status if relevant, solvent residuals, microbial load if tested, stability date, and storage conditions.
Missing items suggest incomplete quality control or a supplier not taking documentation seriously.
Certificate of analysis
A COA is not optional — it should accompany every batch. It should be batch-specific (not reused), signed or dated by the lab, include raw data (not just summary numbers), and name the testing lab and methods.
Traceability information
The documentation should allow you to trace the batch. This includes supplier name, lab location, batch production dates, and links to synthetic source material if relevant.
Traceability enables recall and investigation if a quality issue arises.
Documentation red flags
Same COA across multiple orders. Missing batch numbers. Unsigned or undated certificates. No lab identification. No raw data (chromatograms, spectra). Vague dates or storage information.