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.
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
38 recorded failures across 374 applicable results from 27 vendors.
6,435 other eligible records have no included result for this check. That includes missing, unknown and borderline endotoxin results.
3 failures belong to vendors with fewer than 10 applicable results, so those vendors are not ranked below.
Latest eligible report: 2026-08-31. Each row below shows one vendor’s own test history.
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01 Vendor identity hiddenExplore test results 17failures / 49 tests 34.7%share of tests · 4 sources 2026-08-23latest lab result
Inside the lab evidence
Public preview17 failures in 49 applicable results from this vendor
Other compoundsExplore failed COAs9 / 13 failures / results
- Endotoxin failure 9
TirzepatideExplore failed COAs2 / 9 failures / results
- Endotoxin failure 2
TesamorelinExplore failed COAs1 / 3 failures / results
- Endotoxin failure 1
Explore all 7 compounds with failures
Showing 5 of 7 compound groups with failures. 131 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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02 Vendor identity hiddenExplore test results 12failures / 54 tests 22.2%share of tests · 4 sources 2026-08-31latest lab result
Inside the lab evidence
Public preview12 failures in 54 applicable results from this vendor
RetatrutideExplore failed COAs1 / 7 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.
Connect these results to a vendor.Reveal vendor with ProPro reveals the name and gives you access to the lab-report archive.
03 Vendor identity hiddenExplore test results 4failures / 13 tests 30.8%share of tests · 4 sources 2026-08-09latest lab result
Inside the lab evidence
Public preview4 failures in 13 applicable results from this vendor
Other compoundsExplore failed COAs2 / 4 failures / results
- Endotoxin failure 2
TirzepatideExplore failed COAs1 / 3 failures / results
- Endotoxin failure 1
241 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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04 Vendor identity hiddenExplore test results 1failures / 17 tests 5.9%share of tests · 1 source 2026-07-20latest lab result
Inside the lab evidence
Public preview1 failure in 17 applicable results from this vendor
RetatrutideExplore failed COAs1 / 11 failures / results
- Endotoxin failure 1
123 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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05 Vendor identity hiddenExplore test results 1failures / 15 tests 6.7%share of tests · 3 sources 2026-08-21latest lab result
Inside the lab evidence
Public preview1 failure in 15 applicable results from this vendor
RetatrutideExplore failed COAs1 / 8 failures / results
- Endotoxin failure 1
135 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.
Connect these results to a vendor.Reveal vendor with ProPro reveals the name and gives you access to the lab-report archive.
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: 2026-08-31. Method and limitations →