Domestic peptide resellers
Domestic resellers.
Ranked by lab reports.
Compare unique reports and measured results from U.S.-based resellers. Products may be made overseas. Rank counts reports, not product quality.
Data refreshed Report dates are shown with each test.
Domestic peptide reseller rankings
Resellers with the most lab reports
Ranks 51–100 of 102. Open a row to explore compounds and certificates.
51 Prime Peptides Explore test results No buyer reviews indexed 96Unique reports 2026-10-17Last observed2+ years COA history 0% underdosed1% low purity 49 47
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
52 Puratek Peptides Explore test results No buyer reviews indexed 91Unique reports 2026-06-04Last observed< 1 year COA history 1% underdosed0% low purity 81 10
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
53 Midwest Peptide Explore test results No buyer reviews indexed 90Unique reports 2026-08-24Last observed< 1 year COA history 4% underdosed0% low purity 70 20
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
54 Peptide Supply Co Explore test results No buyer reviews indexed 89Unique reports 2026-04-23Last observed< 1 year COA history 5% underdosed0% low purity 80 9
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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55 Tydes Explore test results No buyer reviews indexed 89Unique reports 2026-09-16Last observed2+ years COA history 3% underdosed3% low purity 61 28
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
56 Nova Life Peptides Explore test results No buyer reviews indexed 88Unique reports 2026-09-19Last observed< 1 year COA history 3% underdosed0% low purity 68 20
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
57 TOP — Top Peptide Explore test results No buyer reviews indexed 86Unique reports 2026-08-13Last observed2+ years COA history 13% underdosed5% low purity 76 10
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
58 Penguin Peptides Explore test results No buyer reviews indexed 83Unique reports 2026-09-24Last observed1+ year COA history 3% underdosed11% low purity 64 19
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
59 Profound Aminos Explore test results No buyer reviews indexed 82Unique reports 2026-10-16Last observed< 1 year COA history 2% underdosed0% low purity 57 25
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
60 Blue Ridge Peptides Explore test results No buyer reviews indexed 81Unique reports 2026-07-27Last observed< 1 year COA history 0% underdosed0% low purity 68 13
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
61 Step One Ventures Explore test results No buyer reviews indexed 73Unique reports 2026-09-10Last observed< 1 year COA history 4% underdosed0% low purity 60 13
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
62 Bulk Peptide Supply Explore test results No buyer reviews indexed 73Unique reports 2026-10-08Last observed1+ year COA history 0% underdosed3% low purity 59 14
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
63 AIO Peptides Explore test results No buyer reviews indexed 70Unique reports 2026-09-14Last observed1+ year COA history 10% underdosed1% low purity 52 18
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
64 Atomik Labz Explore test results No buyer reviews indexed 68Unique reports 2026-08-12Last observed1+ year COA history 0% low purity 66 2
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
65 Onyx Research Explore test results No buyer reviews indexed 64Unique reports 2026-07-17Last observed1+ year COA history 9% underdosed0% low purity 56 8
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
66 Premier Bio Labs Explore test results No buyer reviews indexed 60Unique reports 2026-07-02Last observed< 1 year COA history 10% underdosed5% low purity 47 13
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
67 Amino Science Explore test results No buyer reviews indexed 59Unique reports 2026-10-14Last observed< 1 year COA history 15% underdosed0% low purity 32 27
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
68 Regenerative Research Explore test results No buyer reviews indexed 54Unique reports 2026-09-11Last observed1+ year COA history 20% underdosed3% low purity 37 17
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
69 UNYX Peptides Explore test results No buyer reviews indexed 53Unique reports 2026-08-21Last observed< 1 year COA history 2% underdosed0% low purity 30 23
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
70 Mile High Compounds Explore test results No buyer reviews indexed 52Unique reports 2026-08-26Last observed1+ year COA history 9% underdosed7% low purity 41 11
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
71 Forge Performance Co. Explore test results No buyer reviews indexed 52Unique reports 2026-09-18Last observed< 1 year COA history 2% underdosed0% low purity 28 24
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
72 Evolve Biopep Explore test results No buyer reviews indexed 51Unique reports 2026-02-09Last observed1+ year COA history 15% low purity 51 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
73 Crownwell Research Explore test results No buyer reviews indexed 50Unique reports 2026-08-27Last observed< 1 year COA history 2% underdosed0% low purity 37 13
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
74 LabSourced Peptides Explore test results No buyer reviews indexed 48Unique reports 2026-09-17Last observed< 1 year COA history 12% underdosed8% low purity 45 3
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
75 CorePeptides Explore test results No buyer reviews indexed 47Unique reports 2026-10-01Last observed1+ year COA history 0% low purity 39 8
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
76 ezPeps Explore test results No buyer reviews indexed 44Unique reports 2026-04-27Last observed< 1 year COA history 6% underdosed0% low purity 40 4
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
77 Amino Amigos Explore test results No buyer reviews indexed 41Unique reports 2025-07-16Last observed1+ year COA history 23% low purity 41 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
78 GigaCompounds Explore test results No buyer reviews indexed 40Unique reports 2026-08-13Last observed< 1 year COA history 9% underdosed12% low purity 40 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
79 RIVN Peptides Explore test results No buyer reviews indexed 39Unique reports 2026-07-01Last observed< 1 year COA history 10% underdosed0% low purity 39 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
80 Chimera Peptides Explore test results No buyer reviews indexed 38Unique reports 2026-09-15Last observed1+ year COA history 0% low purity 30 8
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
81 Loti Labs Explore test results No buyer reviews indexed 36Unique reports 2026-08-01Last observed1+ year COA history 17% low purity 36 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
82 SKO Compounds Explore test results No buyer reviews indexed 33Unique reports 2026-07-09Last observed< 1 year COA history 0% underdosed0% low purity 22 11
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
83 OroviaWellness Explore test results No buyer reviews indexed 30Unique reports 2026-10-15Last observed< 1 year COA history 4% underdosed0% low purity 14 16
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
84 PEPTIDES WORLD Explore test results No buyer reviews indexed 30Unique reports 2024-06-28Last observed3+ years COA history 20% underdosed0% low purity 0 30
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
85 Ion Peptides Explore test results No buyer reviews indexed 26Unique reports 2026-07-30Last observed1+ year COA history 5% underdosed4% low purity 25 1
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
86 Bulk Peptide Wholesale Explore test results No buyer reviews indexed 24Unique reports 2026-10-06Last observed< 1 year COA history 4% low purity 20 4
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
87 Licensed Peptides Explore test results No buyer reviews indexed 23Unique reports 2026-08-04Last observed< 1 year COA history 6% underdosed0% low purity 19 4
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
88 Longevity Peptides Explore test results No buyer reviews indexed 23Unique reports 2026-08-05Last observed1+ year COA history 6% underdosed0% low purity 10 13
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
89 Limitless Life Nootropics Explore test results No buyer reviews indexed 22Unique reports 2025-09-25Last observed1+ year COA history 45% low purity 22 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
90 Golden Eagle Explore test results No buyer reviews indexed 19Unique reports 2026-09-13Last observed1+ year COA history 0% low purity 18 1
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
91 NexxGen Peptides Explore test results No buyer reviews indexed 15Unique reports 2026-05-20Last observed< 1 year COA history 9% underdosed0% low purity 15 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
92 Peptide Haven Explore test results No buyer reviews indexed 15Unique reports 2025-12-02Last observed1+ year COA history 0% underdosed0% low purity 15 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
93 Peptilab Research Explore test results No buyer reviews indexed 15Unique reports 2025-05-20Last observed1+ year COA history 0% low purity 15 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
94 Pure Health Peptides Explore test results No buyer reviews indexed 15Unique reports 2026-01-13Last observed< 1 year COA history 11% underdosed9% low purity 14 1
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
95 Nu Lab Peptides Explore test results No buyer reviews indexed 15Unique reports 2026-08-17Last observed< 1 year COA history 0% underdosed0% low purity 13 2
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
96 Void Research Explore test results No buyer reviews indexed 13Unique reports 2026-10-02Last observed< 1 year COA history 10% underdosed0% low purity 12 1
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
97 Atomix Research Explore test results No buyer reviews indexed 9Unique reports 2025-05-14Last observed1+ year COA history 11% low purity 9 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
98 Artemyx Research Explore test results No buyer reviews indexed 9Unique reports 2026-08-14Last observed< 1 year COA history 0% underdosed0% low purity 7 2
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
99 Virtus Peptides Explore test results No buyer reviews indexed 7Unique reports —Last observedCOA history not recorded Fewer than 5 applicable tests 7 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
100 Praetorian Peptides Explore test results No buyer reviews indexed 6Unique reports 2026-08-05Last observed< 1 year COA history 0% underdosed0% low purity 4 2
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
Check the original reports, dates and tested batches.
Each report counts once, even when it tests several compounds or appears in multiple archives. Percentages need at least five applicable amount or purity results; explicit endotoxin failures are always shown. See the methodology and known limitations.
Explore low purity, underfilled samples and other lab findings for this seller group →