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.

17,090 lab results102 vendors in the report-count rankingHow the rankings work →

Data refreshed Report dates are shown with each test.

U.S.-based domestic resellers

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 domestic resellers in this comparison

2 recorded failures across 2,482 applicable results from 67 vendors.

14,608 other eligible records have no included result for this check. That includes missing, unknown and borderline endotoxin results.

Latest eligible report: 2026-10-18. Each row below shows one vendor’s own test history.

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  1. 01 Vendor name available with ProExplore test results 2failures / 38 tests 5.3%share of tests · 2 sources 2026-10-09latest lab result

    Lab evidence

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    2 failures in 38 applicable results from this vendor

    Other compoundsExplore failed COAs1 / 2 failures / results
    • Endotoxin failure 1
    NAD+Explore failed COAs1 / 1 failures / results
    • Endotoxin failure 1

    697 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: 2026-10-18. Method and limitations →