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Two audits, side by side. Composite, subscores, shipping, payment, coupons. BioTech Peptides takes the higher composite this cycle.
Established US-domestic peptide synthesizer with a substantial catalog and same-day shipping. It does publish per-batch COAs - 84 of 89 product pages carry a downloadable certificate, most of them MZ Biolabs reports naming the client and lot, with a set of older SKUs on a lab-unnamed template. Public-data audit; we have placed no test order.
Held for reference, not a current recommendation. swisschems.is is the store FDA wrote to in 2024 (letter 695663); swisschemzlab.com, registered 13 Sep 2026, is a lookalike. Finnrick passes 4 of 10 samples. We have removed it from the ranked vendor list and dropped our affiliate link and code. 46/100.