Domestic peptide resellers
The most-reviewed
Domestic peptide resellers.
Compare U.S.-based resellers by their unique independent lab reports. A domestic reseller buys from an upstream supplier and resells locally. The product may still be made overseas. More reports means more testing evidence, not guaranteed quality.
Domestic peptide reseller rankings
Most-reviewed Domestic peptide resellers
Showing ranks 1–50 of 101. The order is based on unique independent lab reports, not a quality score. Lab-test percentages require at least five applicable dose or purity results; explicit endotoxin failures are always shown.
01 Vendor identity hiddenExplore test results No buyer reports yet 1,457Unique reports 2026-08-29Last observed 5% short-dosed1% low purity 1,200 257
Inside the lab evidence
Public preview35 failures in 1,446 applicable results from this vendor
- Purity below 97% 5
- At least 10% short 4
Lowest measured purity 95.32%Largest measured shortfall 43.5%
- At least 10% short 5
Lowest measured purity 99.18%Largest measured shortfall 15.7%
- At least 10% short 3
Lowest measured purity 99.49%Largest measured shortfall 22.2%
- Purity below 97% 1
- At least 10% short 2
Lowest measured purity 49.94%Largest measured shortfall 48.4%
- At least 10% short 2
Lowest measured purity 98.74%Largest measured shortfall 12.5%
Showing 5 of 16 compound groups with failures. 10 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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02 Vendor identity hiddenExplore test results No buyer reports yet 703Unique reports 2026-08-13Last observed 0% short-dosed3% low purity 585 118
Inside the lab evidence
Public preview84 failures in 586 applicable results from this vendor
- Purity below 97% 5
- At least 10% short 29
- Compound not found 1
Lowest measured purity 93.97%Largest measured shortfall 26.2%
- At least 10% short 16
- Compound not found 1
Lowest measured purity 97.27%Largest measured shortfall 29.7%
- Purity below 97% 3
- At least 10% short 4
- Compound not found 1
Lowest measured purity 63.84%Largest measured shortfall 31%
- At least 10% short 5
- Compound not found 1
Lowest measured purity 97.19%Largest measured shortfall 25.7%
- Purity below 97% 5
- At least 10% short 1
Lowest measured purity 91.99%Largest measured shortfall 13.2%
Showing 5 of 12 compound groups with failures. 116 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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03 Vendor identity hiddenExplore test results No buyer reports yet 660Unique reports 2026-08-23Last observed 3% short-dosed4% low purity 616 44
Inside the lab evidence
Public preview42 failures in 612 applicable results from this vendor
- Purity below 97% 4
- At least 10% short 10
Lowest measured purity 9.64%Largest measured shortfall 32.87%
- Purity below 97% 1
- At least 10% short 4
- Compound not found 1
Lowest measured purity 92.48%Largest measured shortfall 49.19%
- Purity below 97% 1
- At least 10% short 4
Lowest measured purity 94.61%Largest measured shortfall 89.12%
- Purity below 97% 4
- At least 10% short 2
Lowest measured purity 31.94%Largest measured shortfall 97.14%
- At least 10% short 3
Lowest measured purity 98.02%Largest measured shortfall 81.36%
Showing 5 of 14 compound groups with failures. 48 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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04 Vendor identity hiddenExplore test results No buyer reports yet 645Unique reports 2026-08-30Last observed 3% short-dosed2% low purity 571 74
Inside the lab evidence
Public preview40 failures in 607 applicable results from this vendor
- Purity below 97% 9
- At least 10% short 3
Lowest measured purity 58.8%Largest measured shortfall 19%
- At least 10% short 4
- Compound not found 1
Lowest measured purity 98.74%Largest measured shortfall 28.3%
- At least 10% short 3
Lowest measured purity 99.69%Largest measured shortfall 60.5%
- Purity below 97% 1
- At least 10% short 2
Lowest measured purity 87.76%Largest measured shortfall 38%
- At least 10% short 3
Lowest measured purity 98.08%Largest measured shortfall 27%
Showing 5 of 14 compound groups with failures. 37 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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05 Vendor identity hiddenExplore test results No buyer reports yet 578Unique reports 2026-08-30Last observed 4% short-dosed1% low purity 517 61
Inside the lab evidence
Public preview21 failures in 544 applicable results from this vendor
- Purity below 97% 5
- At least 10% short 5
Lowest measured purity 96.33%Largest measured shortfall 19.9%
- Purity below 97% 1
- At least 10% short 2
Lowest measured purity 88.19%Largest measured shortfall 29%
- At least 10% short 3
Lowest measured purity 99.41%Largest measured shortfall 19.9%
- At least 10% short 1
Lowest measured purity 99.14%Largest measured shortfall 10.79%
- At least 10% short 1
Lowest measured purity 99.27%Largest measured shortfall 17.11%
Showing 5 of 8 compound groups with failures. 34 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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06 Vendor identity hiddenExplore test results No buyer reports yet 551Unique reports 2026-08-26Last observed 1% short-dosed1% low purity 485 66
Inside the lab evidence
Public preview12 failures in 550 applicable results from this vendor
- Purity below 97% 4
- At least 10% short 3
Lowest measured purity 76.15%Largest measured shortfall 43.2%
- At least 10% short 3
Lowest measured purity 98.25%Largest measured shortfall 23.37%
- At least 10% short 2
Lowest measured purity 97.61%Largest measured shortfall 13.3%
- At least 10% short 2
Lowest measured purity 99.54%Largest measured shortfall 14.3%
- At least 10% short 1
Lowest measured purity 99.39%Largest measured shortfall 10.8%
0 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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07 Vendor identity hiddenExplore test results No buyer reports yet 502Unique reports 2026-09-01Last observed 4% short-dosed1% low purity 342 160
Inside the lab evidence
Public preview21 failures in 467 applicable results from this vendor
- Purity below 97% 2
- At least 10% short 6
Lowest measured purity 96.95%Largest measured shortfall 37%
- Purity below 97% 1
- At least 10% short 1
Lowest measured purity 40.86%Largest measured shortfall 20.58%
- At least 10% short 2
Lowest measured purity 99.45%Largest measured shortfall 88.61%
- Purity below 97% 1
- At least 10% short 2
Lowest measured purity 89.76%Largest measured shortfall 67.75%
- At least 10% short 1
Lowest measured purity 99.33%Largest measured shortfall 14.55%
Showing 5 of 11 compound groups with failures. 35 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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08 Vendor identity hiddenExplore test results No buyer reports yet 449Unique reports 2026-08-28Last observed 5% short-dosed0% low purity 288 161
Inside the lab evidence
Public preview18 failures in 443 applicable results from this vendor
- At least 10% short 2
Lowest measured purity 99.09%Largest measured shortfall 12.6%
- At least 10% short 2
Lowest measured purity 99.38%Largest measured shortfall 48.92%
- At least 10% short 2
Lowest measured purity 98.87%Largest measured shortfall 25.8%
- At least 10% short 1
Lowest measured purity 99.27%Largest measured shortfall 11.3%
- At least 10% short 1
Lowest measured purity 99.11%Largest measured shortfall 14.5%
Showing 5 of 15 compound groups with failures. 6 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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09 Vendor identity hiddenExplore test results No buyer reports yet 418Unique reports 2026-08-14Last observed 5% short-dosed1% low purity 375 43
Inside the lab evidence
Public preview10 failures in 388 applicable results from this vendor
- At least 10% short 2
Lowest measured purity 98.66%Largest measured shortfall 17%
- At least 10% short 2
Lowest measured purity 98.36%Largest measured shortfall 59.8%
- Purity below 97% 1
- At least 10% short 1
Lowest measured purity 91.22%Largest measured shortfall 15.2%
- At least 10% short 1
Lowest measured purity 99.29%Largest measured shortfall 15.42%
- Purity below 97% 1
Lowest measured purity 93.69%
Showing 5 of 8 compound groups with failures. 30 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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10 Vendor identity hiddenExplore test results No buyer reports yet 409Unique reports 2026-08-27Last observed 3% short-dosed2% low purity 302 107
Inside the lab evidence
Public preview15 failures in 407 applicable results from this vendor
- Purity below 97% 6
- At least 10% short 3
Lowest measured purity 94.49%Largest measured shortfall 53%
- At least 10% short 2
Lowest measured purity 99.47%Largest measured shortfall 16.01%
- At least 10% short 1
Lowest measured purity 99.51%Largest measured shortfall 11.05%
- Purity below 97% 1
Lowest measured purity 94.63%
- Purity below 97% 1
Lowest measured purity 92.86%
Showing 5 of 8 compound groups with failures. 2 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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11 Vendor identity hiddenExplore test results No buyer reports yet 382Unique reports 2026-07-23Last observed 7% short-dosed1% low purity 71 311
Inside the lab evidence
Public preview9 failures in 189 applicable results from this vendor
- At least 10% short 3
Lowest measured purity 98.69%Largest measured shortfall 12.2%
- At least 10% short 2
Lowest measured purity 98.03%Largest measured shortfall 19%
- At least 10% short 2
Lowest measured purity 99.03%Largest measured shortfall 13.7%
- At least 10% short 1
Lowest measured purity 98.02%Largest measured shortfall 11.6%
- Purity below 97% 1
Lowest measured purity 96.75%
193 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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12 Vendor identity hiddenExplore test results No buyer reports yet 350Unique reports 2026-08-29Last observed 3% short-dosed2% low purity 261 89
Inside the lab evidence
Public preview14 failures in 344 applicable results from this vendor
- Purity below 97% 4
Lowest measured purity 95.88%
- At least 10% short 1
Lowest measured purity 99.04%Largest measured shortfall 44%
- At least 10% short 1
Lowest measured purity 99.01%Largest measured shortfall 50.3%
- At least 10% short 1
Lowest measured purity 97.74%Largest measured shortfall 15.8%
- At least 10% short 1
Lowest measured purity 99.83%Largest measured shortfall 10.82%
Showing 5 of 11 compound groups with failures. 6 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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13 Vendor identity hiddenExplore test results No buyer reports yet 292Unique reports 2026-07-31Last observed 6% short-dosed2% low purity 288 4
Inside the lab evidence
Public preview20 failures in 288 applicable results from this vendor
- Purity below 97% 2
- At least 10% short 2
Lowest measured purity 94.12%Largest measured shortfall 16.56%
- At least 10% short 2
Lowest measured purity 99%Largest measured shortfall 66.05%
- At least 10% short 2
Lowest measured purity 98.09%Largest measured shortfall 19.9%
- Purity below 97% 2
Lowest measured purity 94.72%
- At least 10% short 2
Lowest measured purity 99.26%Largest measured shortfall 20.4%
Showing 5 of 13 compound groups with failures. 4 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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14 Vendor identity hiddenExplore test results No buyer reports yet 290Unique reports 2026-08-31Last observed 0% short-dosed1% low purity 228 62
Inside the lab evidence
Public preview2 failures in 287 applicable results from this vendor
- Purity below 97% 1
Lowest measured purity 96.03%
- Purity below 97% 1
Lowest measured purity 96.74%
3 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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15 Vendor identity hiddenExplore test results No buyer reports yet 283Unique reports 2026-08-27Last observed 9% short-dosed5% low purity 216 67
Inside the lab evidence
Public preview25 failures in 267 applicable results from this vendor
- At least 10% short 6
Lowest measured purity 97.22%Largest measured shortfall 43.05%
- Purity below 97% 6
- At least 10% short 2
Lowest measured purity 68.75%Largest measured shortfall 42.6%
- At least 10% short 2
- Compound not found 1
Lowest measured purity 97.8%Largest measured shortfall 22%
- Purity below 97% 3
Lowest measured purity 95.29%
- At least 10% short 2
Lowest measured purity 99.18%Largest measured shortfall 17.4%
Showing 5 of 8 compound groups with failures. 16 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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16 Vendor identity hiddenExplore test results No buyer reports yet 280Unique reports 2026-08-03Last observed 2% low purity 272 8
Inside the lab evidence
Public preview95 failures in 272 applicable results from this vendor
- At least 10% short 18
- Compound not found 11
Lowest measured purity 98.83%Largest measured shortfall 46%
- At least 10% short 11
Lowest measured purity 98.4%Largest measured shortfall 22.2%
- At least 10% short 11
Lowest measured purity 98.8%Largest measured shortfall 28%
- At least 10% short 6
- Compound not found 3
Lowest measured purity 98.69%Largest measured shortfall 53%
- At least 10% short 6
- Compound not found 1
Lowest measured purity 98.24%Largest measured shortfall 17.6%
Showing 5 of 11 compound groups with failures. 0 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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17 Vendor identity hiddenExplore test results No buyer reports yet 261Unique reports 2026-08-11Last observed 4% short-dosed1% low purity 199 62
Inside the lab evidence
Public preview8 failures in 257 applicable results from this vendor
- Purity below 97% 2
- At least 10% short 1
Lowest measured purity 95.64%Largest measured shortfall 19.1%
- At least 10% short 1
Lowest measured purity 99.29%Largest measured shortfall 10.2%
- At least 10% short 1
Lowest measured purity 99.26%Largest measured shortfall 11.4%
- At least 10% short 1
Lowest measured purity 99.12%Largest measured shortfall 19.1%
- At least 10% short 1
Lowest measured purity 99.59%Largest measured shortfall 10.1%
Showing 5 of 6 compound groups with failures. 4 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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18 Vendor identity hiddenExplore test results No buyer reports yet 257Unique reports 2026-06-08Last observed 6% short-dosed4% low purity 243 14
Inside the lab evidence
Public preview17 failures in 232 applicable results from this vendor
- Purity below 97% 3
- At least 10% short 4
Lowest measured purity 87.56%Largest measured shortfall 18.85%
- Purity below 97% 3
Lowest measured purity 90.39%
- At least 10% short 2
Lowest measured purity 99.38%Largest measured shortfall 33.3%
- At least 10% short 1
Lowest measured purity 98.44%Largest measured shortfall 61.52%
- At least 10% short 1
Lowest measured purity 99.26%Largest measured shortfall 10.57%
Showing 5 of 8 compound groups with failures. 25 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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19 Vendor identity hiddenExplore test results No buyer reports yet 256Unique reports 2026-08-14Last observed 13% short-dosed0% low purity 156 100
Inside the lab evidence
Public preview20 failures in 234 applicable results from this vendor
- At least 10% short 3
Lowest measured purity 99.15%Largest measured shortfall 39.64%
- At least 10% short 3
Lowest measured purity 99.08%Largest measured shortfall 22.2%
- At least 10% short 3
Lowest measured purity 99%Largest measured shortfall 37.2%
- At least 10% short 2
Lowest measured purity 99%Largest measured shortfall 37%
- Purity below 97% 1
Lowest measured purity 96.3%
Showing 5 of 13 compound groups with failures. 22 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
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20 Vendor identity hiddenExplore test results No buyer reports yet 249Unique reports 2026-08-21Last observed 1% short-dosed0% low purity 240 9
Inside the lab evidence
Public preview1 failure in 241 applicable results from this vendor
- At least 10% short 1
Lowest measured purity 99.49%Largest measured shortfall 10.9%
2 other eligible records have no applicable result for this comparison. A sample can fail several checks; it counts once in the overall total. Includes reports with a checkable source and a usable result for this comparison. Results describe the submitted samples. Missing results never count as passes.
Pro reveals the name and gives you access to the lab-report archive.
Each report counts once, even when it tests several compounds or appears in multiple archives. Open a vendor profile for its batch reports. See the methodology and known limitations.
Explore low purity, underfilled samples and other lab findings for this seller group →