Editorial & Investigation

Research & Lab Reports

Independent analysis of peptide purity data, vendor verification methodology, and investigative reports from the BiohackTested editorial team. No sponsored content. No pay-for-placement reviews.

Lab Testing & Verification2026-08-317 min read

The Peptide Purity Problem: 5 Red Flags in Vendor COAs That Researchers Miss

Most peptide vendor "Certificates of Analysis" are marketing documents — not scientific evidence. Learn how to spot fake COAs, manipulated purity claims, and the difference between a vendor PDF and a real third-party HPLC report.

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We're currently preparing independent batch analyses, vendor comparison deep-dives, and HPLC interpretation guides. Subscribe to our research feed or check back weekly.

While you're here — research individual compounds

Retatrutide Tirzepatide BPC-157 TB-500 (Thymosin Beta-4)GHK-Cu (Copper Peptide)Epithalon (Epitalon)CJC-1295 (no DAC)Ipamorelin Semaglutide NAD+ (Nicotinamide Adenine Dinucleotide)MOTS-c AOD-9604