Certificate of Analysis
We don't grade our own homework. Every ProGrade batch is analyzed by Janoshik Analytical — an independent, industry-recognized lab — for identity and purity, then screened for heavy metals and endotoxin. See the standard before you buy, and the exact document for your vial on request.
≥99%
Purity release standard
100%
Lots tested
4
Assays / batch
High-performance liquid chromatography quantifies peptide purity against a ≥99% release standard.
Liquid chromatography–mass spectrometry confirms the exact molecular identity and mass of each compound.
Heavy-metals (ICP-MS) and bacterial-endotoxin (LAL) screening confirm each batch is clean, not just pure.
What every ProGrade COA shows
Each certificate is tied to a single production lot. The layout below is the field structure you receive — the specific results are printed per batch on the document for the vial you order.
Search the full catalog and request the batch-specific certificate for any compound. Verification is free — email the lot number on your vial and we return the matching COA.
Showing 23 of 23 catalog items. A batch-specific Certificate of Analysis is issued for every lot; request the exact document for the vial you receive.
If any independently conducted HPLC test on a vial you received returns below our stated purity standard, we refund the full order — including shipping — and the cost of the test. The data is the product.
Request a COA