Understanding HPLC Testing for Peptides: How Researchers Evaluate Purity and Quality

Understanding HPLC Testing for Peptides: How Researchers Evaluate Purity and Quality Introduction If you have spent any time researching peptides, you have likely encountered a Certificate of Analysis (COA) that includes an HPLC report. Many peptide suppliers advertise purity levels such as 98%, 99%, or even higher, often accompanied by chromatograms and laboratory data. Despite […]

Why a 99% Pure Peptide Can Still Fail Quality Standards

Why a 99% Pure Peptide Can Still Fail Quality Standards Introduction One of the most common claims researchers encounter when evaluating peptide products is a stated purity level of 99% or higher. At first glance, a 99% purity result appears to indicate an exceptional product. Many buyers assume that if a peptide tests at 99% […]