Understand the report.
Know what to ask.
A practical guide to peptide documentation, from the first line of a certificate to the limits of a laboratory result. Explore the evidence with real reports from our archive.
Start with these four guides
How to read a peptide certificate of analysis
Read a real peptide COA from Aera’s archive. Learn how batch identifiers, purity, quantity and identity results fit together, and what they do not prove.
Read the guide →Check the sourceHow to verify a peptide COA and connect it to a batch
Use a real Aera archive example to distinguish laboratory report verification from batch matching, including report keys, sample IDs and limitations.
Read the guide →Understand the numbersPeptide purity and peptide content measure different things
Compare purity, measured peptide quantity and powder weight using actual Aera archive results. Learn why 99% purity does not tell you the amount in a vial.
Read the guide →Understand the methodsWhat HPLC and mass spectrometry tell you about a peptide
Explore HPLC and mass spectrometry using a real two-page Aera archive report, with a chromatogram, peak list and mass-based identity result.
Read the guide →