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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.
Brand-new (2026) research-peptide storefront with third-party COAs attributed to Freedom Diagnostics and competitive per-mg pricing. Two things hold the score back - the GLP compounds ship under proprietary house labels (now "RPH-R3", "RPH-TRZ2") rather than their real identities, which carries a regulatory-exposure deduction, and the operation has no public track record yet. Public-data audit; we have placed no test order.