Verified by Buyers, Not by Us.
Every entry below is a third-party Certificate of Analysis uploaded by a Peptx customer who commissioned their own independent lab test. We publish the results exactly as the laboratory reported them. Recent independent lab results are also published in our COA Library, with 13 further tests in progress or planned across September and October.
1. Order & receive
Order any batch from Peptx. Note the batch number on your vial label.
2. Test independently
Send a sample to an accredited ISO 17025 lab for HPLC, LC-MS or full purity panel.
3. Upload & earn 5%
Upload the CoA PDF and lab reference. Verified uploads earn a single-use 5% discount code on orders over 200.
Our pass/fail policy
Every verified report is published exactly as the laboratory reported it. When a batch falls short, we mark it Under Review, contact the factory, share their response publicly, and refund or replace for affected buyers. We pay the 5% credit either way, because we want the test done.
The library
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