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.
1966 Cx Chengxin Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-10-03Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
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
1930 Pepti.ca Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-10-01Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1967 Purely Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-10-01Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1931 MC Research Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-29Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1906 Norvxa Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-27Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1946 Pep Research Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-26Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1968 Ankr Lab Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-25Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1969 Px Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-25Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1907 Hunan Goodpeptides Biotech Co Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-24Latest test date1+ 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1970 Labratsco Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-24Latest test date< 1 year COA history 1 endotoxin failure 0 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.
1971 Tianjin Starharbor Technology Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-24Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1972 www.bodypharm.me Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-24Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1973 Yvonne Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-24Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1908 TM Research Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-19Latest test date1+ 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1947 RSF Pep Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-19Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1974 Nutripeptix Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-19Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1975 Rn Advanced Research Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-19Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1976 Shandong Zhongle Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-17Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1932 McGovern and Associates, Inc. Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-13Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1933 Dozer Inc. Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-10Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1977 Wkc Walker Chemicals Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-09Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1948 Inner Circle Compounds LLC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-06Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1949 Peptigenix Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-06Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1950 Onelifefitness Hawaii Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-09-02Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1934 PEPX Compounds Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-28Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1909 CC Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-27Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1910 Somata Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-21Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1935 Lux Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-21Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1936 Onebio Research Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-19Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1978 Shaanxi Xianhe Biotech Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-12Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1979 True Signature Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-12Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1911 R&L Peptides Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-09Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1912 AK Aminos Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-08Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1937 The Way Bio Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-06Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1913 DiPex Bio Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-05Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1938 Skytop Aminos, LLC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-01Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1951 Huai'an Dinglin Trading Co., Ltd. Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-01Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1952 Pep of Life Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-08-01Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1914 Onyx BioLabs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-31Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1939 CA RESEARCH SHOP Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-30Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1953 Northstar Compounds Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-30Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1915 AK BioMaxxing Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-28Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1916 Island Wellness and Recovery Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-28Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1940 Jaxtri Labs Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-27Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1954 Utah Peptide LLC Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-25Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1812 Apex Pharma.io Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-24Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1955 NanoAminos Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-21Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1980 Dh Peps Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-20Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
1956 JAZA Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-17Latest 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.
Read the evidence behind the summary.
Open vendor profile
Check the original reports, dates and tested batches.
1981 Sys Pharma Corp Explore test results Seller type not reviewed No buyer reviews indexed 4Unique reports 2026-07-13Latest test date< 1 year COA history Fewer than 5 applicable tests 0 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.
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.