Quality & Testing

Every Pepmolecule lot is tested by an independent US laboratory before it is listed for sale.

• HPLC purity analysis — 99%+ target
• Mass-spectrometry identity confirmation
• Endotoxin screening (LAL)
• Certificates published per lot and searchable

We also encourage customers to verify independently: the lot number printed on your vial matches the certificate for that lot, and third-party re-testing is always welcome.