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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1835 Aminoryx Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-06-07Latest test date< 1 year COA history Fewer than 5 applicable tests 4 0
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1836 BASELINE LABS USA Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-06-07Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1837 Pugpeps Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-06-05Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1838 VPC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-06-02Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1922 Alpha Bio Med Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-06-01Latest test date< 1 year COA history Fewer than 5 applicable tests 3 1
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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1839 Hellfire GB Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-30Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1840 Altitude Health Group / XL Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-28Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1923 AK Space City Peps Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-28Latest test date< 1 year COA history Fewer than 5 applicable tests 3 1
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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1841 Aura Cell, Trailhead, Auctus, Rebel Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-27Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1842 JMo Lab Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-27Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1843 The Way B10 Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-27Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1844 Chosen Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-23Latest test date< 1 year COA history Fewer than 5 applicable tests 4 0
Lab evidence
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1845 ZRP Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-23Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1846 Ammion Peps Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-21Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1986 Camo Chem UK Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-21Latest test date< 1 year COA history Fewer than 5 applicable tests 0 4
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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1847 Iron Chain Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-20Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1943 Dmv Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-20Latest test date< 1 year COA history Fewer than 5 applicable tests 2 2
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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1848 Worth Wellness Group Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-17Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1849 AminoexLabs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-16Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1850 Cornbred Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-14Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1851 MedPep Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-14Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1852 Adversi Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-12Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1853 Kira HXTNT Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-11Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1854 Flextide co LLC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-08Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1855 MIDNIGHT SUNS PEPTIDES Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-05Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1856 Modern Medical Wholesalers Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-05-03Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1857 Falcon Pharma Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-29Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1924 Arctic Supply Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-26Latest test date< 1 year COA history Fewer than 5 applicable tests 3 1
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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1858 DMB Research Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-23Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1859 RRPSamples/SCORERo Direct Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-21Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1860 Lumevara / Iron All Day Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-19Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1861 Etsy's Biotech Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-18Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1862 www.vicopeptide.com Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-15Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1863 Centurion Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-14Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1864 HHP Health Consulting Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-14Latest test date1+ year COA history Fewer than 5 applicable tests 4 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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1865 Altitude Health Group Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-11Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1866 Atlas Optimization Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-06Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1867 Morning Peptide Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-05Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1868 Superior Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-03Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1869 VERAPEP Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-04-02Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1944 Source Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-25Latest test date< 1 year COA history Fewer than 5 applicable tests 2 2
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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1945 PureGenix Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-24Latest test date< 1 year COA history Fewer than 5 applicable tests 2 2
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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1870 TruLabs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-22Latest test date1+ year COA history Fewer than 5 applicable tests 4 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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1871 Crimson Peptide, LLC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-18Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1958 Ironview Compounds Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-18Latest test date< 1 year COA history Fewer than 5 applicable tests 1 3
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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1872 Enhanced Chem Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-17Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1946 Integrative Health + Aesthetics Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-17Latest test date< 1 year COA history Fewer than 5 applicable tests 2 2
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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1959 The Violet Helix Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-15Latest test date< 1 year COA history Fewer than 5 applicable tests 1 3
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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1873 Hong Kong Lemite Group Limited Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-07Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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1874 China Peptides Supplier Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-03-02Latest test date< 1 year COA history Fewer than 5 applicable tests 4 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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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
- 121,121
- 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 · 7,719 unique reports · 20 observed in 30 days
- Compare manufacturers, exporters and other international sellers by their independent lab reports.
- Domestic resellers
- 102 reviewed vendors · 17,267 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 · 57,154 unique reports · 348 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 2026-10-27. 24 measured results have no usable date.
Domestic resellers: Recorded lab dates 2020-01-31 to 2026-10-27. 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 vendors1,785 measured results11.2–100% purity in 1,720 results Domestic resellers2,070 measured results33.7–100% purity in 1,918 results TirzepatideLab results by vendor↗ International vendors1,283 measured results40.4–100% purity in 1,249 results Domestic resellers1,437 measured results55.9–100% purity in 1,333 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 vendors402 measured results12.7–100% purity in 382 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.