Lab testing & certificates of analysis

Every quantitative claim on this site must trace to a document on this page. Certificates publish here per batch, with lot numbers, as independent testing is completed — and until a certificate exists for a lot, we say "in progress" instead of printing a number.

Batch intake

Each production lot receives a lot number carried through to the certificate.

Independent testing

Lots are submitted to third-party laboratories for RP-HPLC purity and LC-MS identity confirmation.

Publication

The certificate — purity %, identity result, lot, test date, lab — publishes below with the PDF.

Verification

Where the testing lab operates a public verification database, each entry links to the lab's own record.

Batch verification

Look up the lot on your vial

Every vial label carries a lot number. Enter it to pull the matching certificate — the label and the certificate must agree, which is the whole point of batch traceability.

Certificate library

The library is being populated. Third-party testing of current lots is underway; the first certificates publish here as the documentation is completed. We would rather show you an honest empty shelf than a decorative badge — check back, or subscribe to be notified when certificates go live.

How to read a certificate

A complete peptide COA carries: mass-spec identity confirmation, reverse-phase HPLC purity with the chromatogram, net content versus label, the batch/lot number, receipt and report dates, and the testing laboratory's name. When you receive an order, the lot number on your label should match a certificate in this library — that match is the entire point of batch documentation.

Questions

If you need documentation that isn't published yet for a compound you're evaluating, ask us — we can tell you where a lot is in the testing pipeline.