Overall findings
Most lab-test failures
Vendors with the most tested samples showing at least one problem.
Investigate 3,071 peptide vendors.
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2694 Athena Wellness Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-30Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
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2695 Shanghai LeadPeptide Biotechnology Co., LTD. Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-30Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2696 ItsAMeMario2023 - Project Clear Gear Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-27Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2697 Peptide USA Express Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-26Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2698 Donato Wellness Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2699 Eterna Smart Wellness Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2700 Heron Health Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2701 Peps Only Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2702 PuraHelix Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2703 Rock Compound, LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-25Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2704 DoughBoy Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2705 Peptix labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2706 Rejuvenate Wellness - BGS Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2707 RWS Express, LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2708 ZJ Biolab Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2845 Looktide Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 0 1
Lab evidence
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2709 Exsilio International, LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-22Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2710 FBP Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-22Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2711 Arpovo Health Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2712 Bio-Qor-Research Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2713 Obvious Reel Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2714 Trippy Inventory LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2715 Truecell Research Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2716 Hunt Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-19Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2717 Amethyst Bottles/Pinky's Research Lab Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-18Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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2718 C3 Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-18Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2719 PrimeX Wellness Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-18Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2720 Rodas Nano Science Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-18Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2721 Veteran Services Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-16Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2722 mjtpeptides.com Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2723 Scungilli Research Laboratories Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2724 Sno Valley Peptides LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2725 The Morrigan LLC Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2726 www.ssrbio.com Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2727 Biochemapi Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2728 BIOVELLA Beauty Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2729 Cellipep Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2730 ChengXin Technology Company Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2731 Emawen Research Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2732 Longevity Science Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2733 Peptide Concierge Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2734 JoseMartinezPeps Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-11Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
Free previewExplore this vendor’s lab reports
Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2735 Peptiva Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-11Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2736 Helix Core Labs (https://discord.gg/helixcorelabs) Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-10Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2737 9 to 5 Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-09Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2738 XRX Peptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-09Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2739 Bio Genius Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-07Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2740 NYQE Labs Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-07Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2741 Pro Labs Research Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-04-07Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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2742 TMSpeptides Explore test results Seller type not reviewed No buyer reviews indexed 1Unique reports 2026-03-27Latest test date< 1 year COA history Fewer than 5 applicable tests 1 0
Lab evidence
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Pick a compound, then a report, to see what the lab measured. Each report counts once, and only reports with a source link and a readable result appear here, so this list can hold fewer reports than the total above.
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More reports means more evidence to inspect, not better quality. Each report counts once. Purity and amount percentages require at least five applicable results; explicit endotoxin failures are always shown. Missing measurements are not passes.
Understand the coverage
- Published COA report entries
- 120,993
- Ranked vendors across all seller groups
- 3,071
- Index refresh
Report dates are shown with each test. International classification does not establish factory ownership. U.S. resale does not establish U.S. manufacture.
The first 20 identities in each seller group’s original report-count ranking are shown to signed-in members. Changing the sort order does not change access. Vendors ranked 21 and below in those rankings remain named.
- International vendors
- 30 reviewed vendors · 7,704 unique reports · 19 observed in 30 days
- Compare manufacturers, exporters and other international sellers by their independent lab reports.
- Domestic resellers
- 102 reviewed vendors · 17,264 unique reports · 41 observed in 30 days
- Compare U.S.-based resellers. The seller is domestic; the product may still come from an overseas supplier.
- Seller type not reviewed
- 2,939 vendors · 57,121 unique reports · 363 observed in 30 days
- Sellers with independent lab reports whose seller type we have not reviewed yet.
Each report counts once, even when it tests several compounds or appears in multiple archives. Purity and dose results describe submitted samples, not everything a vendor sells. The methodology and known limitations explain eligibility and exclusions.
Explore recorded findings and compound comparisons
What is a domestic reseller?
A reseller buys from another supplier and sells under its own storefront or brand. Here, domestic means U.S.-based. Local shipping does not mean the product was made in the U.S. or tested after resale. Check the report for the actual batch.
Follow the evidence
Where the tests went wrong.
Recorded failures alongside the number of applicable tests. Choose a seller group to see the results behind each count.
Contamination findings
Failed endotoxin tests
Compare repeated failures in tests for bacterial endotoxins.
Below 97% purity
Low purity results
Vendors with the most measured purity results below 97%.
At least 10% short
Underfilled samples
See where tests found less compound than the stated amount.
Identity findings
Compound not found
Vendors with the most results that did not find the labeled compound.
What these counts include
All available results in the lab-findings comparisons. Each category counts only applicable tests; missing measurements do not count as passes. One sample can appear in several categories, but counts once in the overall total. These are counts of tested samples, not failure rates for everything a vendor sells.
International vendors: Recorded lab dates 2022-06-24 to 2026-10-20. 24 measured results have no usable date.
Domestic resellers: Recorded lab dates 2020-01-31 to 2026-10-22. 143 measured results have no usable date.
Choose your compound
Compare lab results
by compound.
Explore measured results, compare vendors and open their lab reports. These figures cover the same reviewed seller groups as the findings above.
GLP-1 and related compounds
RetatrutideLab results by vendor↗ International vendors1,779 measured results11.2–100% purity in 1,714 results Domestic resellers2,067 measured results33.7–100% purity in 1,915 results TirzepatideLab results by vendor↗ International vendors1,282 measured results40.4–100% purity in 1,248 results Domestic resellers1,436 measured results55.9–100% purity in 1,332 resultsGrowth hormone and related compounds
HGHLab results by vendor↗ International vendors79 measured results90.45–99.9% purity in 76 results Domestic resellers9 measured results96.14–99.84% purity in 9 results TesamorelinLab results by vendor↗ International vendors400 measured results12.7–100% purity in 380 results Domestic resellers582 measured results48.94–99.99% purity in 525 resultsRanges include measured purity above 0%. “Compound not found” is counted separately. The report library has broader coverage; vendor rankings apply their own minimum test counts.
Beyond the lab
What was it like to order?
Buyer reviews cover delivery, communication and service. Each keeps its date and source.