How to read a peptide COA

A Certificate of Analysis records laboratory results for a submitted sample. Start with the lot number, then read the methods, values and limitations in the original report.

Find a product or lot

Match the report to the lot

Compare the product name, stated amount and lot number on the certificate with the product record and the label on the supplied vial. Check the laboratory name, report reference, report date and any retest or expiry date.

If the numbers differ, ask Biomod to confirm the documentation for the lot being supplied. A report for another lot does not establish results for yours.

Read each test on its own terms

Identity: Check the stated compound and the method used to identify it. A product name in the heading alone does not establish a peptide sequence or chemical form.
Purity and assay: Read these separately. Chromatographic purity describes a method-specific result; the assay reports measured content with its own units. A purity percentage alone does not tell you the milligrams in a vial.
Elemental impurities: Read each analyte, result, unit and reporting limit. Keep qualifiers such as ND (non-detect) with the result; do not turn them into a claim of zero impurities.
Microbiological tests: Look for the actual methods and results for endotoxins or sterility, if tested. A purity result does not answer these questions. Read the laboratory’s limits and sample qualifications.

Keep the laboratory’s units, inequality signs and qualifications intact. The original PDF takes precedence over a storefront summary.

What the library status means

Matching-lot certificate: The certificate lot matches the listed product lot. This describes the document match; read the report for test scope and results.
Lot needs confirmation: A certificate is available, but its lot has not been matched to the listed product. Ask for the relevant report before relying on it.
Documentation pending: No original certificate is available in the published record. This is not a completed test result.

Read the laboratory’s limitations

The Vanguard report linked in the example limits its results to the portion of the sample tested and states that the laboratory did not select the sample or verify that it represents the batch. A matching lot number does not remove those limitations.

A COA does not establish regulatory approval, clinical effectiveness or suitability for human or animal use. Biomod research products are supplied for laboratory research only.

Use the research supplier checklist to compare identity, lot documentation, handling records and complete order costs.

Ask about a product lot or report