49 suppliers scored7 FDA warning letters tracked8 closures on recordUpdated October 2026 · How scoring works
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October 2026 shortlist · 41 qualify

Best us-based suppliers

A US address means US consumer-protection law, domestic shipping and, usually, a company you can look up in a state business registry.

#SupplierScoreThird-party testingPublic COAsLot-levelReference priceBased
1Licensed Peptideslicensedpeptides.com81/100YesYesYes—USReviewVisit site
2Core Peptidescorepeptides.com78/100YesYesYes$52USReviewVisit site
3Ascension Peptidesascensionpeptides.com76/100YesYesYes—USReviewVisit site
4Paramount Peptidesparamountpeptides.com76/100YesYesYes—USReviewVisit site
5Sports Technology Labssportstechnologylabs.com74/100YesYesNot verified$54.99USReviewVisit site
6Koi Peptideskoipeptides.com72/100YesYesYes—USReviewVisit site
7Alpha Peptidesalpha-peptides.com71/100YesYesYes—USReviewVisit site
8Evolve Peptidesevolvepeptides.com71/100YesYesYes$39.90USReviewVisit site
9BioLongevity Labsbiolongevitylabs.com70/100YesYesYes—USReviewVisit site
10Pure Peptide Labspurepeptidelabs.shop70/100YesYesYes—USReviewVisit site
11Peptide Perfectionpeptideperfection.com69/100YesYesYes—USReviewVisit site
12Simple Peptidesimplepeptide.com69/100YesNot verifiedYes—USReviewVisit site
13Alpha Labs Peptidesgoalphalabs.com68/100YesYesNot verified$20.99USReviewVisit site
14Biotech Peptidesbiotechpeptides.com66/100YesYesYes$52USReviewVisit site
15Peptide Prospeptidepros.net66/100LimitedYesYes$47.25USReviewVisit site
16Verified Peptidesverifiedpeptides.com66/100YesYesYes—USReviewVisit site
17Limitless Biotechlimitlesslifenootropics.com65/100YesYesYes—USReviewVisit site
18Liberty Peptideslibertypeptides.com63/100YesYesYes—USReviewVisit site
20Peptide Warehousepeptide-warehouse.com60/100YesYesYes$52.99USReviewVisit site
21Blue Sky Peptideblueskypeptide.com59/100YesYesNot verified$42.87USReviewVisit site
22Prime Peptidesprimepeptides.co59/100YesYesYes—USReviewVisit site
23Swiss Chemsswisschems.is59/100YesYesYes—USReviewVisit site
24Umbrella Labsumbrellalabs.is59/100YesYesNot verified$48.99USReviewVisit site
25Loti Labslotilabs.com58/100YesYesYes$49.99USReviewVisit site
28NuScience Peptidesnusciencepeptides.com56/100YesYesNot verified—USReviewVisit site
29Geo Peptidesgeopeptides.com55/100LimitedYesNot verified$33.99USReviewVisit site
30Extreme Peptidesextremepeptides.com52/100Not verifiedYesNot verified$48.99USReviewVisit site
33American Research Pensamericanresearchpens.com44/100LimitedNot verifiedNot verified—USReviewVisit site
34Enhanced Peptidesenhancedpeptides.com43/100Not verifiedNoNot verified—USReviewVisit site
35PureRawzpurerawz.co42/100LimitedNot verifiedNot verified—USReviewVisit site
36Xcel Peptidesxcelpeptides.com40/100YesNoNot verified—USReviewVisit site
37Peptide Crafterspeptidecrafters.com39/100LimitedNoNot verified—USReviewVisit site
38Amino Asylumaminoasylumofficial.com38/100LimitedNot verifiedYes—USReviewVisit site
39Atomik Labzatomiklabz.com37/100LimitedNoNot verified$40USReviewVisit site
43US Peptidesuspeptides.com31/100Not verifiedNoNot verified$46.39USReviewVisit site
44Polaris Peptidespolarispeptides.com30/100Not verifiedNoNot verified—USReviewVisit site
45Elite Peptideselitepeptides.com29/100Not verifiedNoNot verified$39.99USReviewVisit site
46USA Peptidesusapeptides.com27/100Not verifiedNoNot verified—USReviewVisit site
47Skye Peptidesskyepeptides.com25/100Not verifiedNoNot verified—USReviewVisit site
48Eternal Peptideseternalpeptides.com19/100Not verifiedNot verifiedNot verified—USReviewVisit site
49Modern Aminosmodernaminos.com16/100Not verifiedNot verifiedNot verified—USReviewVisit site

Why Licensed Peptides leads this list

Licensed Peptides scores 81/100 overall: testing 100, transparency 94, track record 27. Boca Raton, FL vendor selling vials, 30 ml atomized solutions, capsules and blends; several products carry coded names (LP3-R, LP2-T) recorded here as listed. Publishes a per-lot COA library (mostly JPG scans) naming Vanguard Laboratory and Ethos Analytics, plus separate endotoxin and residual-solvent libraries; sterility and mass-spec are claimed on marketing pages but the COA index lists HPLC only. No 5 mg BPC-157 price could be confirmed because the product page shows conflicting figures; shop grid lists 'From $53.99'. Trustpilot profile has been removed; Finnrick shows 4 tests (2 pass / 2 fail).

Read the Licensed Peptides review

Frequently asked questions

Which supplier leads for us-based suppliers?

Licensed Peptides with 81/100, followed by Core Peptides (78).

How is this list built?

It is the overall ranking filtered by one verifiable attribute from each supplier fact sheet. No separate weighting is applied.

Are these products for personal use?

No. Every supplier listed sells materials labeled for laboratory research use only, and this site does not describe or endorse any other use.