Certificates of Analysis (COAs) are the foundation of trust between a research supplier and its customers. They provide complete transparency by allowing you to independently verify the authenticity of every peptide. Each COA confirms that our products meet or exceed 99% purity, validated through advanced testing methods such as HPLC, LC‑MS, and NMR. Beyond purity, COAs demonstrate strict compliance with safety standards, including heavy metal screening, endotoxin assays, and microbial contamination checks. Most importantly, these reports are issued by independent, third‑party laboratories—not internal claims—ensuring that the data you see is accurate, unbiased, and reliable. In short, COAs matter because they guarantee transparency, purity, compliance, and trust.