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Certificates of analysis

Every batch we ship has its certificate here, with the batch code printed on the vial, what was tested, how, and the measured result. Nothing to request and nobody to message. How we check every batch

What is tested?

It depends on what the compound is, because one panel cannot fit all of them. A peptide is released on purity by HPLC, identity by mass spectrometry, water content, counter-ion, pH, endotoxin and sterility. A blend is measured one component at a time. A recombinant protein adds aggregate content, host cell protein and residual DNA. Bacteriostatic water has its own panel, because there is no peptide in it to have a purity.

Where is the certificate?

On this page and on the product page, for the batch we are shipping now. It opens in one click, with no login, nothing to request and nobody to message.

Does one certificate cover every size?

Yes. Each compound has one current batch, and its certificate lists every strength that batch covers.

Which batch did I receive?

The batch code is printed on the vial, and the certificate shows it large, next to the label artwork, so you can hold the vial up to the screen. Your order email and packing slip carry it too.

Can I see an older batch?

Yes, on the same page. Every earlier batch stays published, with its own code, purity and dates. We never take a published result down.

Do you ever ship a batch without a certificate?

No. The certificate is published before that batch goes out, and the build refuses to put a size on sale without one. No report, no sale.