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
Failed endotoxin tests
Only clear pass or fail results count. Missing, unknown and borderline results are excluded. Counts do not measure how much endotoxin was present.
Across international vendors in this comparison
41 recorded failures across 451 applicable results from 28 vendors.
6,858 other eligible records have no included result for this check. That includes missing, unknown and borderline endotoxin results.
1 failures belong to vendors with fewer than 10 applicable results, so those vendors are not ranked below.
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 17failures / 57 tests 29.8%share of tests · 5 sources 2026-10-09latest lab result
Lab evidence
Free preview17 failures in 57 applicable results from this vendor
Other compoundsExplore failed COAs9 / 13 failures / results
- Endotoxin failure 9
TirzepatideExplore failed COAs2 / 11 failures / results
- Endotoxin failure 2
NAD+Explore failed COAs2 / 2 failures / results
- Endotoxin failure 2
TesamorelinExplore failed COAs1 / 4 failures / results
- Endotoxin failure 1
GHK-CuExplore failed COAs1 / 3 failures / results
- Endotoxin failure 1
Explore all 7 compounds with failures
Showing 5 of 7 compound groups with failures. 147 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 12failures / 55 tests 21.8%share of tests · 4 sources 2026-09-21latest lab result
Lab evidence
Free preview12 failures in 55 applicable results from this vendor
NAD+Explore failed COAs10 / 15 failures / results
- Endotoxin failure 10
RetatrutideExplore failed COAs1 / 8 failures / results
- Endotoxin failure 1
BPC-157Explore failed COAs1 / 2 failures / results
- Endotoxin failure 1
1,250 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 3failures / 23 tests 13%share of tests · 2 sources 2026-10-12latest lab result
Lab evidence
Free preview3 failures in 23 applicable results from this vendor
NAD+Explore failed COAs2 / 4 failures / results
- Endotoxin failure 2
RetatrutideExplore failed COAs1 / 10 failures / results
- Endotoxin failure 1
328 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 3failures / 16 tests 18.8%share of tests · 5 sources 2026-09-18latest lab result
Lab evidence
Free preview3 failures in 16 applicable results from this vendor
TirzepatideExplore failed COAs1 / 4 failures / results
- Endotoxin failure 1
Other compoundsExplore failed COAs1 / 3 failures / results
- Endotoxin failure 1
NAD+Explore failed COAs1 / 1 failures / results
- Endotoxin failure 1
247 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 PPHK — Peptide Pole HongKongExplore test results 2failures / 14 tests 14.3%share of tests · 2 sources 2026-09-14latest lab result
Lab evidence
Free preview2 failures in 14 applicable results from this vendor
RetatrutideExplore failed COAs2 / 7 failures / results
- Endotoxin failure 2
42 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.
Read the evidence behind the summary.View vendorCheck the original reports, dates and tested batches.
06 Vendor name available with ProExplore test results 1failures / 17 tests 5.9%share of tests · 1 source 2026-10-09latest lab result
Lab evidence
Free preview1 failure in 17 applicable results from this vendor
RetatrutideExplore failed COAs1 / 10 failures / results
- Endotoxin failure 1
369 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 1failures / 17 tests 5.9%share of tests · 1 source 2026-09-04latest lab result
Lab evidence
Free preview1 failure in 17 applicable results from this vendor
RetatrutideExplore failed COAs1 / 11 failures / results
- Endotoxin failure 1
130 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 1failures / 16 tests 6.2%share of tests · 3 sources 2026-09-24latest lab result
Lab evidence
Free preview1 failure in 16 applicable results from this vendor
RetatrutideExplore failed COAs1 / 8 failures / results
- Endotoxin failure 1
142 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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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 →