Vendor rankings
The vendors, graded on what we measured.
Rankings come from blind retail purchases and submitted samples. No vendor can pay to move up this list.
RankVendorAvg purityAvg of labelSamplesGrade
01UtherChina95.5%92.5%182C OkayC02PeptimeUnited States95.3%92.5%176C OkayC03PurePEPSUnited States95.3%92.2%179C OkayC04Marvel PepUnited States95.1%92.6%167C OkayC05Inno PeptidesChina94.9%92.7%163C OkayC06Nuscience PeptidesUnited States94.8%91.8%160C OkayC07Amino AmigosUnited States94.8%94%162C OkayC08Bulk Peptide SupplyUnited States94.8%91.7%165C OkayC09XHT PeptidesChina94.8%92.9%162C OkayC10ZLZ PeptideChina94.8%92%158C OkayC11Paradigm PeptideUnited States94.7%92.9%155C OkayC12Planet PeptideUnited States94.7%91.3%156C OkayC13Aavant ResearchUnited States94.6%93%156C OkayC14Skye PeptidesUnited States94.6%92%151C OkayC15HK PeptidesHong Kong94.6%94.1%153C OkayC16Saiyan MedUnited States94.6%92.3%155C OkayC17Peptide SciencesUnited States94.4%92.1%152C OkayC18YimeiChina94.4%91.5%150C OkayC19Eternal PeptidesUnited States94.4%92.1%147C OkayC20Peptide PartnersUnited States94.3%93.3%145C OkayC21P3 LabzUnited States94.2%91.7%140C OkayC22Jeep BiotechnologyChina94%93.6%136C OkayC23Polaris PeptidesUnited States93.9%91.2%138C OkayC24Astro PeptidesUnited States93.9%91.4%133C OkayC25Peptide CraftersUnited States93.9%92.5%135C OkayC26Limitless LifeUnited States93.9%92%130C OkayC