Documentation
How to read a peptide certificate of analysis
A practical framework for evaluating a peptide COA: lot identity, methods, results, dates, and unanswered questions.
Match the report to the material
Record the supplier name, material identifier, lot number, report number, and issue date. Compare those identifiers with the container and purchase record. A report for another lot is background information, not documentation of the material in hand. If a report is reproduced by a reseller, request the original source and preserve both versions.
Separate the questions being answered
Identity, chromatographic purity, content, water, residual solvents, and other attributes describe different aspects of a material. Read which tests were actually performed. An assay result should include a method and units; a percentage without that context is incomplete. A result for one attribute does not answer an untested question.
Record what the report does not establish
A COA does not by itself establish suitability for a particular experiment or authorize human use. Ask qualified laboratory personnel to evaluate the study requirements and any missing information. Retain the report with the corresponding safety data sheet and laboratory material record. Drop has not published verified supplier COAs for its sample catalog.
Sources & further reading
Sources provide context; they do not endorse Drop or verify its materials.
Keep exploring
Purity, identity, and content ask different questions ↗
Check the documentation registry ↗