Certificate of Analysis

Purvexis research peptides are tested lot by lot by independent laboratories. Every certificate documents RP-HPLC purity against a ≥99% release specification, mass-spectrometry identity confirmation, net peptide content and water determination, residual solvents, bacterial endotoxin by LAL, appearance, and full lot traceability with manufacture and retest dates.

Catalogue COA index

Frequently Asked Questions

Does every product come with a certificate of analysis?

Yes. Every lot is tested and a third-party certificate of analysis is available for it. The COA for your lot is provided with your order, and you can request the current COA for any catalogue item before purchasing.

Who performs the testing?

Analysis is carried out by independent third-party laboratories, not in-house. The testing laboratory is identified on the certificate along with the methods used.

What purity standard does Purvexis hold?

Our release specification is ≥99% purity by RP-HPLC. Lots that do not meet the specification are not released for sale.

How do I request a COA before ordering?

Contact us with the compound, dose and format you are evaluating and we will send the current lot certificate for that item.

Are these materials intended for human use?

No. All Purvexis materials are supplied strictly for research use only and are not for human or veterinary use, diagnostic use, or any therapeutic application.

All materials are supplied for research use only. Not for human or veterinary use.

≥99% purity, third-party COA verified, manufactured in the USA. For research use only — not for human or veterinary use.