Peptide vendor lab results
Where lab tests
found problems.
Compare recorded test failures within each seller group. Counts show what was found in tested samples, not everything a vendor sells.
Data refreshed Report dates are shown with each test.
International vendors
Compound not found
Counts exact-zero identity results in the current comparison. It does not establish that a vial was empty, and it is not an ordinary 0% purity measurement.
Across international vendors in this comparison
116 recorded failures across 6,415 applicable results from 30 vendors.
894 other eligible records have no included result for this check. Missing and excluded measurements never count as passes.
Latest eligible report: 2026-10-14. Each row below shows one vendor’s own test history.
Open a vendor row to explore compounds and test failures. Reveal protected names with Pro.
01 Vendor name available with ProExplore test results 16failures / 515 tests 3.1%share of tests · 3 sources 2026-10-12latest lab result
Lab evidence
Free preview16 failures in 515 applicable results from this vendor
TirzepatideExplore failed COAs6 / 140 failures / results
- Compound not found 6
TesamorelinExplore failed COAs3 / 37 failures / results
- Compound not found 3
RetatrutideExplore failed COAs2 / 151 failures / results
- Compound not found 2
GHK-CuExplore failed COAs1 / 57 failures / results
- Compound not found 1
CagrilintideExplore failed COAs1 / 12 failures / results
- Compound not found 1
Explore all 8 compounds with failures
Showing 5 of 8 compound groups with failures. 21 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in02 Vendor name available with ProExplore test results 16failures / 346 tests 4.6%share of tests · 2 sources 2026-10-12latest lab result
Lab evidence
Free preview16 failures in 346 applicable results from this vendor
RetatrutideExplore failed COAs6 / 157 failures / results
- Compound not found 6
CJC-1295Explore failed COAs4 / 6 failures / results
- Compound not found 4
TirzepatideExplore failed COAs1 / 43 failures / results
- Compound not found 1
TesamorelinExplore failed COAs1 / 25 failures / results
- Compound not found 1
BPC-157Explore failed COAs1 / 24 failures / results
- Compound not found 1
Explore all 8 compounds with failures
Showing 5 of 8 compound groups with failures. 1 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in03 Vendor name available with ProExplore test results 9failures / 182 tests 4.9%share of tests · 1 source 2026-10-08latest lab result
Lab evidence
Free preview9 failures in 182 applicable results from this vendor
RetatrutideExplore failed COAs2 / 66 failures / results
- Compound not found 2
TesamorelinExplore failed COAs2 / 18 failures / results
- Compound not found 2
TB-500Explore failed COAs2 / 8 failures / results
- Compound not found 2
TirzepatideExplore failed COAs1 / 33 failures / results
- Compound not found 1
BPC-157Explore failed COAs1 / 14 failures / results
- Compound not found 1
Explore all 6 compounds with failures
Showing 5 of 6 compound groups with failures. 1 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in04 Vendor name available with ProExplore test results 7failures / 383 tests 1.8%share of tests · 3 sources 2026-10-09latest lab result
Lab evidence
Free preview7 failures in 383 applicable results from this vendor
TB-500Explore failed COAs5 / 20 failures / results
- Compound not found 5
BPC-157Explore failed COAs1 / 36 failures / results
- Compound not found 1
TesamorelinExplore failed COAs1 / 25 failures / results
- Compound not found 1
3 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in05 Vendor name available with ProExplore test results 6failures / 283 tests 2.1%share of tests · 2 sources 2026-10-12latest lab result
Lab evidence
Free preview6 failures in 283 applicable results from this vendor
CJC-1295Explore failed COAs2 / 7 failures / results
- Compound not found 2
RetatrutideExplore failed COAs1 / 81 failures / results
- Compound not found 1
TirzepatideExplore failed COAs1 / 54 failures / results
- Compound not found 1
TesamorelinExplore failed COAs1 / 29 failures / results
- Compound not found 1
TB-500Explore failed COAs1 / 12 failures / results
- Compound not found 1
23 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in06 Vendor name available with ProExplore test results 5failures / 333 tests 1.5%share of tests · 3 sources 2026-09-18latest lab result
Lab evidence
Free preview5 failures in 333 applicable results from this vendor
RetatrutideExplore failed COAs2 / 100 failures / results
- Compound not found 2
TesamorelinExplore failed COAs1 / 29 failures / results
- Compound not found 1
Other compoundsExplore failed COAs1 / 13 failures / results
- Compound not found 1
Melanotan IIExplore failed COAs1 / 6 failures / results
- Compound not found 1
22 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in07 Vendor name available with ProExplore test results 5failures / 115 tests 4.3%share of tests · 4 sources 2026-10-12latest lab result
Lab evidence
Free preview5 failures in 115 applicable results from this vendor
TirzepatideExplore failed COAs4 / 31 failures / results
- Compound not found 4
BPC-157Explore failed COAs1 / 8 failures / results
- Compound not found 1
14 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in08 Vendor name available with ProExplore test results 4failures / 1,015 tests 0.4%share of tests · 5 sources 2026-09-21latest lab result
Lab evidence
Free preview4 failures in 1,015 applicable results from this vendor
CJC-1295Explore failed COAs2 / 10 failures / results
- Compound not found 2
TirzepatideExplore failed COAs1 / 108 failures / results
- Compound not found 1
TesamorelinExplore failed COAs1 / 61 failures / results
- Compound not found 1
290 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in09 Vendor name available with ProExplore test results 4failures / 196 tests 2%share of tests · 3 sources 2026-10-14latest lab result
Lab evidence
Free preview4 failures in 196 applicable results from this vendor
RetatrutideExplore failed COAs1 / 62 failures / results
- Compound not found 1
TirzepatideExplore failed COAs1 / 32 failures / results
- Compound not found 1
BPC-157Explore failed COAs1 / 14 failures / results
- Compound not found 1
CJC-1295Explore failed COAs1 / 4 failures / results
- Compound not found 1
7 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in10 Vendor name available with ProExplore test results 4failures / 193 tests 2.1%share of tests · 3 sources 2026-10-14latest lab result
Lab evidence
Free preview4 failures in 193 applicable results from this vendor
RetatrutideExplore failed COAs2 / 62 failures / results
- Compound not found 2
BPC-157Explore failed COAs1 / 10 failures / results
- Compound not found 1
SermorelinExplore failed COAs1 / 5 failures / results
- Compound not found 1
15 other eligible records have no applicable result for this comparison. 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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Vendor behind these reportsVendor name available with ProSign up to see names Already have an account? Sign in
Showing up to 10 vendors with at least 10 applicable results each. Ordered by the number of failed results, so heavily tested vendors may appear higher. Read the count and share together. Duplicate certificates are excluded. Missing tests never count as passes. Latest included report: 2026-10-14. Method and limitations →