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
Lab-issued COA documents
PDF reports from the laboratories identified on each posted certificate. Click any report to open it.
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