The Peptide Safety Checklist Nobody Follows

Most people asking about peptides want to know one thing: does it work. That's the wrong first question. Before that, there's a checklist you should be running through — and almost nobody actually does, including plenty of people already using these products. I walk through the five questions to ask before you ever consider a peptide, then spend most of the episode on the part that actually determines whether what you're injecting is safe: what a Certificate of Analysis really proves, which testing labs are genuinely accredited, and a supply-chain finding that should change how carefully you check where these come from. What's covered: The five questions to ask before putting any peptide — or any drug — in your body How to actually read a Certificate of Analysis, and the difference between a vendor grading its own homework and a genuine independent test Why the two most-cited "trusted" testing labs in this space aren't accredited to any recognised standard The pricing structure that financially rewards vendors for skipping the tests that matter most for an injectable A recent finding connecting fentanyl-precursor manufacturers directly to the peptide supply chain Why a purity result alone doesn't prove what's in the vial is what it claims to be Sources & Studies: Peter Attia, MD. The Peter Attia Drive, Episode #387 (AMA #83) — the five-question framework this episode builds on. UKAS, A2LA, NATA. National accreditation body standards for ISO/IEC 17025. FDA. 21 CFR Parts 210 & 211 — Good Manufacturing Practice requirements for laboratory controls. ICH. Q2(R2) and Q14 — Validation of Analytical Procedures. Axios, July 2026. "Chinese fentanyl makers find new U.S. market in peptides" (citing TRM Labs/Chainalysis blockchain analytics). This is informational purposes only, not medical advice. If you can't get seen by your own physician, by all means do so, but always speak to your own healthcare provider. 🔔 Subscribe for weekly breakdowns of the tests, drugs, and decisions that actually move the needle on long-term health.