Not all peptides are created equal. Learn how solid-phase synthesis, HPLC purity testing, mass spectrometry confirmation, and third-party analytical validation separate reliable research reagents from unreliable ones.

A certificate of analysis documents the identity, purity, and quality of a specific batch of research material. This guide explains how to read and evaluate a peptide COA, covering HPLC purity data, mass spectrometry identity confirmation, net peptide content, and endotoxin testing.

Peptide purity percentages are derived from HPLC chromatography, measuring the target peptide peak area against total detected species. Learn how to interpret 95%, 98%, and 99%+ purity grades, understand the difference between purity and net peptide content, and read certificates of analysis with confidence.

Third-party lab testing uses HPLC, mass spectrometry, and endotoxin analysis to independently verify peptide purity, identity, and safety. Learn how each method works and how to interpret a Certificate of Analysis for research peptides.

Modern peptide research increasingly focuses on multi-compound blends that engage complementary biological pathways. Learn why scientists combine peptides like BPC-157, TB-500, GHK-Cu, and KPV, and the science behind synergistic formulations.

Five emerging areas of peptide research are converging in 2026: mitochondrial peptides, oral delivery systems, antimicrobial peptides, AI-designed peptides, and peptide-drug conjugates. This guide covers the latest breakthroughs, verified references, and what researchers should watch.