COA Library
Every batch is independently tested — HPLC for purity, mass spectrometry for identity, and LAL (USP <85>) for bacterial endotoxin — and select lots are re-tested by a second independent lab, Janoshik Analytical. Browse and download the certificate of analysis for each lot below.
36 certificates
How to read a certificate
HPLC, explainedEvery certificate below includes a chromatogram like this — here's what each part of it tells you.
- 1
Solvent front
The injection wash-through that every run starts with. It isn't the compound, and it's excluded from the purity math.
- 2
Main peak — the peptide
One tall, sharp, symmetric peak means one dominant compound. Its position (retention time) is a fingerprint checked against a reference standard.
- 3
Trace impurities
Tiny bumps beside the main peak. The fewer and smaller they are, the cleaner the lot — here they add up to well under 1%.
- 4
Integration → the purity number
Software measures the area under every peak. Main-peak area ÷ total area is the purity percentage printed on the certificate.
99.32 ÷ (99.32 + 0.41 + 0.27) = ≥99% purity
Identity is confirmed separately by mass spectrometry, and lots are screened for bacterial endotoxin (USP <85> LAL) — look for the green pills on each certificate card below.
Batch JA2026257
7 COAsKovera Labs + Janoshik Analytical · October 2026
CG 5000 IU
Batch #JA2026257
Tested by Janoshik Analytical
PURA GH 191aa 24 IU
Batch #JA2026257
Tested by Janoshik Analytical
Batch JA2026164
29 COAsKovera Labs · April–June 2026
Certificates are issued by an independent analytical laboratory. Research Use Only — not for human or veterinary use.