Verify a Batch
Every batch we dispatch carries a certificate of analysis (COA) from the independent Janoshik Analytical laboratory in Prague. Here is how to verify the results for your specific batch — from the vial label to the lab’s original report.
Three verification steps
- Find the batch number. It is printed on every vial label and listed on your order invoice.
- Request the certificate of analysis. Email support@onyxpeptides.com with the batch number in the subject line — we usually send the COA within 24 hours. An overview of our testing is on the quality & testing page.
- Verify the report itself. Every Janoshik report carries its own identification number, and the laboratory will confirm its authenticity on request. You are verifying not just the certificate’s contents but that an independent lab really issued it.
What the certificate contains
- purity measured by HPLC,
- identity confirmed by mass spectrometry (MS),
- net content of active material per vial.
Our guide to reading a certificate of analysis explains each field.
All products are sold strictly for in-vitro laboratory research.