Certificates of Analysis
Every batch we sell is independently lab-tested before release. Look up the report for your batch, or request a full COA copy by serial.
How our COA process works
Independent lab analysis
Each manufacturing batch is sent to a third-party EU laboratory for HPLC/UPLC purity testing before any vial is released for sale.
Batch-level certificate
The lab issues a Certificate of Analysis with the assay results, purity percentage, and batch identifier. We publish it before the batch ships.
QR-traceable per vial
Each vial label carries a QR that resolves to its specific batch COA. Scan to verify authenticity at any time after delivery.
Archived for the lifetime of the batch
We keep the full COA on file for as long as the batch can be in circulation. Request a copy any time using your order or batch number.
What a COA looks like
- Compound
- Sample Peptide
- Batch No.
- RT-2026-A47
- Manufacture date
- 2026-04-12
- Method
- RP-HPLC, UV @ 220 nm
- Purity
- 99.4%
- Mass spec
- Confirmed at expected M+H
- Endotoxin
- < 0.1 EU/mg
- Appearance
- White lyophilized powder
- Storage
- −20°C, light-protected
Request a COA
Enter the batch number printed on your vial label, or the order number from your confirmation email, and we will send the matching certificate to your inbox.
Need a COA before you order?
We publish the most recent batch's certificate on each product page, available before purchase.
Browse the catalog