Overall findings
Most lab-test failures
Vendors with the most tested samples showing at least one problem.
Investigate 3,071 peptide vendors.
Review testing histories, buyer reports and recorded concerns in one directory.
1017 Ez Peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-09-07Latest test date1+ year COA history 14% low purity 9 5
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
See who these vendors are.Sign up with your email to see every vendor name in this directory. No payment needed. Pro adds original COAs, batch details and buyer reviews.Sign up to see names
Already have an account? Sign in
1014 Orama Peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-30Latest test date< 1 year COA history 0% underdosed0% low purity 12 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1018 Phoenix Rising Peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-26Latest test date< 1 year COA history 0% underdosed0% low purity 9 5
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1036 Source One Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-17Latest test date< 1 year COA history 8% underdosed0% low purity 1 13
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1035 eBazarr Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-13Latest test date< 1 year COA history 0% underdosed0% low purity 2 12
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1039 suppeptide.com Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-06Latest test date1+ year COA history 8% underdosed0% low purity 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1025 The Back Room Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-08-03Latest test date< 1 year COA history 0% underdosed0% low purity 5 9
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
986 Peptagen Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-28Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1010 Beauty Biogenics LLC Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-21Latest test date< 1 year COA history 8% underdosed0% low purity 13 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
987 peptidehk.com Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-20Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1027 Truform Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-15Latest test date< 1 year COA history 0% low purity 4 10
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
988 Grit & Grace Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-02Latest test date< 1 year COA history 8% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
989 Peptriva Research Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-02Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
990 Mission Ready Research Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-07-01Latest test date1+ year COA history 0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
991 Coresequences.com Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-06-25Latest test date< 1 year COA history 9% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
992 CA Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-06-23Latest test date< 1 year COA history 0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
993 KOI peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-06-20Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1011 Axis Peptide Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-06-11Latest test date< 1 year COA history 0% underdosed0% low purity 13 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
994 PeptaraX Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-06-07Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
995 Orvanta Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-20Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1015 Optimum Source Research Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-20Latest test date< 1 year COA history 0% underdosed0% low purity 12 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
996 Peptalyon Co. Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-19Latest test date< 1 year COA history 10% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
997 Peptido Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-16Latest test date< 1 year COA history 0% underdosed8% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1028 Titan Peptides Research Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-13Latest test date< 1 year COA history 0% underdosed0% low purity 4 10
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
998 Interx Health Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-05-09Latest test date1+ year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1031 novo Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-04-29Latest test date3+ years COA history 0% underdosed0% low purity 3 11
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1032 Atlas Prime LLC Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-04-25Latest test date< 1 year COA history 11% underdosed7% low purity 3 11
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
999 Helix Strand Labs Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-03-20Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1000 NG Peptide Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-02-25Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1001 Cela & Co. Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-02-08Latest test date< 1 year COA history 0% underdosed7% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1002 OMNI Longevity Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-02-08Latest test date< 1 year COA history 0% underdosed7% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1040 www.innopetide.com Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-01-23Latest test date1+ year COA history 14% underdosed0% low purity 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1003 Amino Sequence LLC Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2026-01-07Latest test date1+ year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1041 zztai Peptide Ltd Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-12-19Latest test date1+ year COA history 0% underdosed0% low purity 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1004 Elara Research Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-12-11Latest test date< 1 year COA history 0% underdosed7% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1005 Kaia Peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-12-10Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1006 Soltide Sciences Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-12-07Latest test date< 1 year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1012 Cutting Edge Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-11-26Latest test date1+ year COA history 10% underdosed7% low purity 13 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1007 BioVatialis Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-11-14Latest test date< 1 year COA history 0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1042 www.shpeptide.com Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-11-03Latest test date< 1 year COA history 0% underdosed0% low purity 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1008 OBITREX PEPTIDES Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-10-25Latest test date1+ year COA history 0% underdosed0% low purity 14 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1043 US-Pharmacies Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2025-08-19Latest test date1+ year COA history Fewer than 5 applicable tests 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1044 La Casa Del Peptides Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2024-08-03Latest test date2+ years COA history 0% underdosed0% low purity 0 14
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1016 Ironanabolics Explore test results Seller type not reviewed No buyer reviews indexed 14Unique reports 2020-11-13Latest test date6+ years COA history Fewer than 5 applicable tests 10 4
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1068 Marvel Peptide Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-10-09Latest test date< 1 year COA history 0% low purity 10 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1062 OSS Bio Research Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-10-06Latest test date< 1 year COA history 0% underdosed0% low purity 11 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1087 Peptidos502 Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-10-04Latest test date< 1 year COA history 0% underdosed0% low purity 2 11
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1086 Innate Research Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-10-01Latest test date< 1 year COA history 0% underdosed0% low purity 3 10
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1082 Forbidden Fruit Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-09-21Latest test date< 1 year COA history 0% underdosed0% low purity 5 8
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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1063 Glp Keep Body Peptide Explore test results Seller type not reviewed No buyer reviews indexed 13Unique reports 2026-09-18Latest test date< 1 year COA history 0% low purity1 endotoxin failure 11 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
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
- 121,054
- 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 · 17,263 unique reports · 38 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 · 57,119 unique reports · 344 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.