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Vestrand Bioscience

Verify a lot

Batch & COA lookup

Enter the lot number printed on your vial to pull its certificate of analysis. Then confirm it independently — the certificate is only as trustworthy as its verification on the testing lab’s own server.

The lot code is on the vial label. Match it exactly — verification is case-sensitive.

First time verifying a lot?

Our guide explains what HPLC and mass spectrometry show, and what a certificate does and does not prove.

How to read a certificate

Enter a lot number to begin

The result appears here, including the lot’s measured purity and the independent verification details.