COA Library
Every batch COA is publicly accessible. No account, no login required. Locate your lot number below and access your documentation directly.
Search by Lot Number
e.g. VG-BPC157-2503
Full searchable COA database coming soon. In the meantime, scan the QR code on your vial or check your order confirmation email for a direct link to your batch COA.
Where to Look
Every vial has a label printed with the lot number in the format VG-XXXX-YYMM. The QR code on the label links directly to that batch's COA.
Your order confirmation email contains a direct COA link for your specific batch. Search your inbox for "Valence Grade" and look for the COA link.
Scan the QR code printed on the vial label with any smartphone camera. It routes directly to the COA document for that exact lot — no typing required.
Certificate of Analysis
HPLC Chromatogram
The full purity trace — not just a percentage. Shows the peak shape, retention time, and area integration for the target peptide and any impurities.
Mass Spectrometry Identity
Confirms the molecular weight matches the correct peptide sequence. This is the only way to confirm identity — HPLC alone cannot tell you what the compound is.
Lot Number & Test Date
The batch-specific lot number linking the COA to your vial, and the date testing was performed — confirming the data is current to the production run.
ISO 17025 Accredited Laboratory
The name and accreditation number of the independent US laboratory that performed the testing. Verifiable via the A2LA or NVLAP public accreditation directories.
Purity Result
The HPLC purity percentage for the batch. All Valence Grade peptides are ≥99.0% purity — the exact value for your batch is documented here.
Want to learn how to read a COA? See the full guide →
Can't find your batch?
Contact support with your order number and lot number and we'll locate the documentation for you.
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