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Full Transparency

Certificates of Analysis

Browse the independent laboratory reports currently posted for specific lots. Match your vial's lot number to a certificate and read that report for the actual methods and results; a report for another lot does not document your vial.

Compounds tested

34

Published lots

99

Average HPLC purity

99.18%

Testing scope

Lot-specific

Showing 34 of 34 compounds

Our Standard

How posted lots are tested

HPLC Purity

Reverse-phase high performance liquid chromatography quantifies purity against the target peptide peak. Each posted report states the measured result for that lot.

Mass Spectrometry

Peptide mass spectrometry can support molecular-mass identification. The currently posted reports do not include peptide mass-spectrometry results. ICP-MS heavy-metals screening is a separate elemental analysis, not peptide identity testing.

Heavy Metals & Endotoxin

Where listed on a posted report, heavy metals and endotoxin results apply only to that lot; check each report for the tests performed.

Third-Party & Independent

The posted reports identify independent US analytical laboratories and the submitted lot numbers. Each report documents only the sample and tests described on it.

Verify

Match your vial to its certificate

1. Find your lot number

It is printed on the vial label and on your packing slip, in the format NVT-XXXXXX-XX.

2. Search this page

Paste the lot or report number into the search field above to jump straight to the matching certificate.

3. Compare the results

Confirm the compound, size, purity and certification date match the vial you received.

Certificates are published for lots currently in distribution. If your lot is not listed, contact our team with the lot number and we will send the archived report directly. All products are sold strictly for in-vitro laboratory research use only — not for human or veterinary consumption.

Request an archived COA