Vendors don't pay for placement here.The Score is the Score.
PeptideScores is the independent rating system for research peptide suppliers. We score every major vendor on the same six categories — purity, service, shipping, selection, pricing, reputation — using third-party Certificates of Analysis and verified data, never vendor marketing. We don't sell peptides. We don't accept payment for placement. We publish a number, show our work, and update it when the data changes.
Ranked Vendors
Global leaders in research peptides
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Southern Aminos
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Flawless Compounds
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Glow Aminos
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Ion Peptides
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EZ Peptides
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Only 25 of 61 evaluated peptide suppliers currently meet PeptideScores verification standards.
Vendor links may be affiliate links — this does not affect vendor rankings or scores. Rankings are determined solely by our independent scoring methodology.
GenPeptide
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FITSKNS
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IDUN Peptides
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