What is HPLC testing for peptides?

HPLC (high performance liquid chromatography) is the standard lab test for how pure a peptide is and how much of the labeled compound is really in the vial. It separates the peptide you want from leftovers of the making process and from broken-down bits. It is the test most reports in this market are talking about. A lab can be accredited in general and still not have this test covered by its accreditation. That is why the document listing what is covered matters more than the logo.

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.