About Midwest Peptide

Midwest Peptide (Midwest BioResearch LLC) is a US-based research-peptide supplier with a genuinely public COA program: every product page links a batch-specific certificate, and there's a dedicated COA page. All testing we saw is from Freedom Diagnostics, a recognized third-party lab — we verified two real reports, a BPC-157 at 99.48% and a Melanotan-II at 99.13%, both batch-linked with identity by LC-MS and verifiable search codes.

That public, batch-level testing is what our 40% COA factor rewards, and it carries the score. What holds it at 7.5 is everything around it: a single testing lab rather than the ISO-17025/multi-lab panels the very top vendors publish, a new and ad-driven brand with no independent review footprint yet, a non-standard payment setup (Zelle/CashApp/ACH/e-check, no card), and heavy out-of-stock inventory at last check. Pricing on the GLP-1/2/3s is a real strength.