A Certificate of Analysis (COA) is the most important document when evaluating a peptide source. But most buyers don't know how to read one. This guide explains exactly what a legitimate COA contains, what each test confirms, and the red flags that indicate a fraudulent or inadequate document.
What a Legitimate COA Contains
A legitimate third-party COA from an accredited laboratory contains: (1) HPLC chromatogram showing purity percentage — the area under the target peak divided by total area. For research-grade peptides, ≥98% is the minimum acceptable standard. For pharmaceutical-grade (IV-administered) peptides, ≥99.9% is required. (2) Mass spectrometry (MS) data confirming the molecular weight of the compound — this is the only way to verify that the correct peptide sequence was synthesized. HPLC alone cannot distinguish between a correct peptide and a contaminant with similar chromatographic properties. (3) Laboratory accreditation information — the testing lab should be ISO 17025 accredited or equivalent. (4) Lot number and batch date — COAs should be batch-specific, not generic.
Red Flags in COA Documentation
The most common fraud is an in-house COA — a document produced by the vendor's own laboratory rather than an independent third party. These are meaningless. Other red flags: COA without mass spectrometry data (purity alone is insufficient), generic COAs not tied to a specific lot number, COAs from unaccredited labs, and COAs that show suspiciously high purity (99.9%+ for a complex peptide is unusual without pharmaceutical-grade manufacturing).
Why Physician-Supervised Sourcing Eliminates This Problem
Alukard and other physician-supervised clinical providers source from licensed compounding pharmacies that operate under USP 795/797 standards with mandatory third-party testing. The COA verification process is handled by the pharmacy and overseen by the prescribing physician — eliminating the need for patients to evaluate documentation themselves.