What is the difference between a linked lab certificate and a claim only certificate?

A linked lab report names a specific, real, independent lab. You can usually check it against that lab's own records or website. A claim-only listing is a seller saying testing happened, without naming who did it or posting anything you can check. Among the sellers this site tracks, 65 of 99 peptide sellers had a linked lab report and 29 were claim only. That is a real, checkable difference in how far you can trust the number on the label.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of buying, vendors, and lab testing. How to evaluate a seller's claims, certificates of analysis, and pricing.