TB-500 Purity: 1443 Lab Tests Across 697 Vendors

17 studies (22 from unattributed sources) on TB-500 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 1443 TB-500 batches across 697 manufacturers

Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →

98.88%
Avg purity
1443
Batches tested
697
Manufacturers
16
Failed <90% purity
43
Underdosed >10%
ManufacturerBatchesAvg purity
Peptaris 26 99.29% View COA →
Uther Peptide 20 99.46% View COA →
Qing Li Peptide 19 95.67% View COA →
Verified Peptides 18 99.64% View COA →
Unknown vendor (review) 18 99.45% View COA →
Sry Labs 17 98.87% View COA →
Reta Peptide 14 97.26% View COA →
Simple Peptide 13 99.4% View COA →

Recent certificates: #63637 (98.71%) · #31776 (99.62%) · #48967 (99.66%) · #26659 (99.16%) · #27956 (99.87%) · #41472 (99.13%)

Vendors who tested TB-500

Manufacturers with published third-party certificates of analysis for TB-500. Open a vendor to see every batch we've verified.

Peptaris 26 COAs · 99.3% avg UTHER 20 COAs · 99.5% avg QLP 19 COAs · 95.7% avg Verified Peptides 18 COAs · 99.6% avg SRY 17 COAs · 98.9% avg Reta Peptide 14 COAs · 97.3% avg Nexaph 13 COAs · 99.4% avg Simple Peptide 13 COAs · 99.4% avg Lilipeptide 13 COAs · 96.8% avg Alpha & Omega 12 COAs · 99.5% avg Peptide Tech 12 COAs · 99.3% avg Peptide Partners 11 COAs · 99.2% avg

Research tools

Free, no account — handy when you're working with TB-500.

Reconstitution calculator Bac water, concentration & insulin-unit math Verify a COA Look up a report number against our corpus