Blind lab tests
We buy products from vendors as an anonymous customer and send them to an accredited laboratory for identity and purity analysis. Vendors are not warned and cannot opt out. Every result is published, pass or fail, with the report.
- 0 results published
- 0 passed
- 0 failed
First round in progress
Samples from listed vendors are being purchased anonymously and submitted for HPLC and mass-spectrometry analysis at a UKAS-accredited laboratory. Results appear here, and in each vendor's trust score, as soon as the reports arrive.
How a test works
- Blind purchase. We order through the vendor's normal checkout under a name and address the vendor does not associate with PeptideCheck, paying the public price.
- Chain of custody. The sealed vial is photographed, logged with its batch number and sent unopened to the laboratory.
- Analysis. The lab confirms identity (is it the stated peptide?) and purity (what percentage of the contents is that peptide?), and where possible the quantity against the label claim.
- Publication. The result, the report and the batch number are published here and on the vendor's page. A pass adds to the vendor's trust score; a fail deducts from it. Vendors may respond publicly but cannot remove a result.
Owner-operated vendors are tested on exactly the same basis. Want a specific product tested? Email us.