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.
299 LOGA — Shenzhen Loga Tech Lg Loga Explore test results Seller type not reviewed No buyer reviews indexed 48Unique reports 2026-07-23Latest test date1+ year COA history 0% low purity 40 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.
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
298 AxonChems LLC Explore test results Seller type not reviewed No buyer reviews indexed 48Unique reports 2026-07-03Latest test date< 1 year COA history 0% underdosed0% low purity 42 6
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.
296 Prevail Peptides Explore test results Seller type not reviewed No buyer reviews indexed 48Unique reports 2026-03-05Latest test date1+ year COA history 14% underdosed0% low purity 47 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.
304 Transforma Peptides Explore test results Seller type not reviewed No buyer reviews indexed 48Unique reports 2025-11-21Latest test date< 1 year COA history 7% underdosed5% low purity 0 48
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.
314 Ascend BioHealth Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-10-14Latest test date1+ year COA history 11% underdosed0% low purity 2 45
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.
312 Peak Age Wellness Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-10-02Latest test date< 1 year COA history 0% underdosed0% low purity 20 27
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.
313 Nuage Research Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-10-02Latest test date< 1 year COA history 5% underdosed0% low purity 7 40
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.
310 Petratide Science Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-09-29Latest test date1+ year COA history 3% underdosed5% low purity 24 23
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.
311 TrustedPeps Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-09-15Latest test date< 1 year COA history 2% underdosed2% low purity 23 24
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.
308 Inno Amino LLC Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-07-08Latest test date1+ year COA history 12% underdosed4% low purity 38 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.
305 Suaway Lab Research Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-06-23Latest test date1+ year COA history 14% underdosed9% low purity 47 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.
306 Helix Labs Co Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-06-18Latest test date1+ year COA history 11% underdosed0% low purity 47 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.
307 ProgenixTech Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2026-04-14Latest test date1+ year COA history 0% underdosed2% low purity 41 6
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.
315 Ultima Pharmaceuticals Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2025-12-08Latest test date4+ years COA history 0% underdosed 0 47
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.
309 NOXYLABS Explore test results Seller type not reviewed No buyer reviews indexed 47Unique reports 2025-08-13Latest test date2+ years COA history 0% underdosed25% low purity 36 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.
321 Purepeptides Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-10-12Latest test date1+ year COA history 0% underdosed10% low purity1 endotoxin failure 26 20
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.
319 Wllybio Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-09-30Latest test date1+ year COA history 5% low purity 35 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.
323 Metabolic Reset Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-09-27Latest test date< 1 year COA history 0% low purity 9 37
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.
318 Peptide Pond Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-08-27Latest test date< 1 year COA history 5% underdosed0% low purity 43 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.
320 Vital Sculpt Labs Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-08-12Latest test date< 1 year COA history 0% underdosed0% low purity 33 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.
316 Holos LLC Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2026-06-29Latest test date< 1 year COA history 0% underdosed2% low purity 46 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.
322 Beligas Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2025-12-02Latest test date4+ years COA history 32% underdosed 16 30
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.
324 Peptide Powerhouse Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2025-11-21Latest test date< 1 year COA history 12% underdosed7% low purity 0 46
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.
317 Axle Labs Explore test results Seller type not reviewed No buyer reviews indexed 46Unique reports 2025-10-07Latest test date3+ years COA history 6% underdosed33% low purity 46 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.
325 High Octane Amino Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-10-22Latest test date< 1 year COA history 3% underdosed0% low purity 36 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.
328 EZ Peptides LLC Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-09-26Latest test date< 1 year COA history 0% underdosed0% low purity 31 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.
331 Zen Peptides Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-09-24Latest test date1+ year COA history 3% low purity 23 22
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.
329 BlackLabel Peptides Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-09-02Latest test date< 1 year COA history 0% underdosed0% low purity 31 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.
326 Erosyn Labs Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-08-26Latest test date< 1 year COA history 4% underdosed2% low purity 33 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.
327 Amino Nova Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-08-24Latest test date< 1 year COA history 3% underdosed0% low purity 32 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.
330 Neuro Labs Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-07-18Latest test date< 1 year COA history 9% underdosed4% low purity 30 15
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.
332 Biogenesis Labs Inc Explore test results Seller type not reviewed No buyer reviews indexed 45Unique reports 2026-03-03Latest test date1+ year COA history 2% underdosed0% low purity 22 23
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.
339 PeptidesRG Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-10-06Latest test date< 1 year COA history 12% underdosed0% low purity 37 7
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.
341 Biopep LLC Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-10-01Latest test date1+ year COA history 5% underdosed0% low purity 23 21
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.
334 Bfflink Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-09-18Latest test date< 1 year COA history 0% low purity1 endotoxin failure 40 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.
342 NØX Peptides Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-09-16Latest test date< 1 year COA history 3% underdosed0% low purity 23 21
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.
337 BulkGLP Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-08-14Latest test date1+ year COA history 3% underdosed5% low purity 39 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.
340 PulsePeptides Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-08-11Latest test date1+ year COA history 0% underdosed5% low purity 33 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.
333 CERTAPEPTIDES Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-08-06Latest test date< 1 year COA history 6% underdosed0% low purity 42 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.
335 Trulixir Peptides Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-05-16Latest test date< 1 year COA history 3% underdosed0% low purity 40 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.
336 Life Enhancement Peptides Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-05-01Latest test date< 1 year COA history 24% underdosed0% low purity 40 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.
338 Midway Gray Explore test results Seller type not reviewed No buyer reviews indexed 44Unique reports 2026-01-07Latest test date2+ years COA history 8% underdosed0% low purity 39 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.
345 BAOHUA — Baohua Dongnuo Biotechnology Bhd Explore test results Seller type not reviewed 154 buyer reviews 43Unique reports 2026-10-15Latest test date1+ year COA history 0% underdosed0% low purity 32 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.
350 Backroad Aminos Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-10-15Latest test date< 1 year COA history 0% underdosed0% low purity 1 42
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.
347 Polychain Research Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-10-13Latest test date3+ years COA history 2% low purity 21 22
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.
348 Kingdom Research LLC Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-10-07Latest test date< 1 year COA history 0% underdosed0% low purity 17 26
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.
344 Ln Peptides Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-09-18Latest test date1+ year COA history 5% low purity 36 7
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.
346 Stacked Essentials Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-09-10Latest test date< 1 year COA history 6% underdosed0% low purity 28 15
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.
343 Peptide Minds Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-06-12Latest test date< 1 year COA history 14% underdosed4% low purity 39 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.
349 New Wave Peptides Ltd Explore test results Seller type not reviewed No buyer reviews indexed 43Unique reports 2026-04-17Latest test date1+ year COA history 10% underdosed0% low purity 13 30
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
- 120,993
- Ranked vendors across all seller groups
- 3,071
- Index refresh
Report dates are shown with each test. International classification does not establish factory ownership. U.S. resale does not establish U.S. manufacture.
The first 20 identities in each seller group’s original report-count ranking are shown to signed-in members. Changing the sort order does not change access. Vendors ranked 21 and below in those rankings remain named.
- International vendors
- 30 reviewed vendors · 7,704 unique reports · 19 observed in 30 days
- Compare manufacturers, exporters and other international sellers by their independent lab reports.
- Domestic resellers
- 102 reviewed vendors · 17,264 unique reports · 41 observed in 30 days
- Compare U.S.-based resellers. The seller is domestic; the product may still come from an overseas supplier.
- Seller type not reviewed
- 2,939 vendors · 57,121 unique reports · 363 observed in 30 days
- Sellers with independent lab reports whose seller type we have not reviewed yet.
Each report counts once, even when it tests several compounds or appears in multiple archives. Purity and dose results describe submitted samples, not everything a vendor sells. The methodology and known limitations explain eligibility and exclusions.
Explore recorded findings and compound comparisons
What is a domestic reseller?
A reseller buys from another supplier and sells under its own storefront or brand. Here, domestic means U.S.-based. Local shipping does not mean the product was made in the U.S. or tested after resale. Check the report for the actual batch.
Follow the evidence
Where the tests went wrong.
Recorded failures alongside the number of applicable tests. Choose a seller group to see the results behind each count.
Contamination findings
Failed endotoxin tests
Compare repeated failures in tests for bacterial endotoxins.
Below 97% purity
Low purity results
Vendors with the most measured purity results below 97%.
At least 10% short
Underfilled samples
See where tests found less compound than the stated amount.
Identity findings
Compound not found
Vendors with the most results that did not find the labeled compound.
What these counts include
All available results in the lab-findings comparisons. Each category counts only applicable tests; missing measurements do not count as passes. One sample can appear in several categories, but counts once in the overall total. These are counts of tested samples, not failure rates for everything a vendor sells.
International vendors: Recorded lab dates 2022-06-24 to 2026-10-20. 24 measured results have no usable date.
Domestic resellers: Recorded lab dates 2020-01-31 to 2026-10-22. 143 measured results have no usable date.
Choose your compound
Compare lab results
by compound.
Explore measured results, compare vendors and open their lab reports. These figures cover the same reviewed seller groups as the findings above.
GLP-1 and related compounds
RetatrutideLab results by vendor↗ International vendors1,779 measured results11.2–100% purity in 1,714 results Domestic resellers2,067 measured results33.7–100% purity in 1,915 results TirzepatideLab results by vendor↗ International vendors1,282 measured results40.4–100% purity in 1,248 results Domestic resellers1,436 measured results55.9–100% purity in 1,332 resultsGrowth hormone and related compounds
HGHLab results by vendor↗ International vendors79 measured results90.45–99.9% purity in 76 results Domestic resellers9 measured results96.14–99.84% purity in 9 results TesamorelinLab results by vendor↗ International vendors400 measured results12.7–100% purity in 380 results Domestic resellers582 measured results48.94–99.99% purity in 525 resultsRanges include measured purity above 0%. “Compound not found” is counted separately. The report library has broader coverage; vendor rankings apply their own minimum test counts.
Beyond the lab
What was it like to order?
Buyer reviews cover delivery, communication and service. Each keeps its date and source.