TB-500 COA — Verified Certificate of Analysis Results
436 independent third-party certificates of analysis for TB-500, from 10 labs across 169 vendors (2021-02-27 to 2026-06-17).
Every TB-500 certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 436 published TB-500 certs in our corpus.
436
Certificates
10
Independent labs
99.5%
Median tested purity
59%
Within 10% of label dose
↑ 45%
Overdosed (≥ +7% vs label)
↓ 13%
Underdosed (≤ −7% vs label)
10 of these TB-500 certificates reported 0% of the labeled compound — a "sample does not contain" result. Always read the individual cert.
Verified TB-500 certificates of analysis
| Vendor | Purity | Dose vs label | Lab | Tested | |
|---|---|---|---|---|---|
| Shanghai Baoju | 97.5% | -9.8% | LabE | 2026-06-17 | View COA → |
| Huaian Hanyou Peptide | 96.1% | -11.6% | LabE | 2026-06-17 | View COA → |
| Reta Peptide | 97.5% | -2.9% | LabE | 2026-06-15 | View COA → |
| Lilipeptide | 99.4% | -3.9% | LabE | 2026-06-15 | View COA → |
| Hk Peptides | 99.9% | -5.4% | LabE | 2026-06-12 | View COA → |
| Peptide Gurus | 99.749% | +4.9% | Janoshik | 2026-06-10 | View COA → |
| Zepeptide | 0.0% | -100.0% | LabG | 2026-06-08 | View COA → |
| Welon Peptide Solutions | 99.7% | -40.0% | LabG | 2026-06-08 | View COA → |
| Zenith Jove Peptide Zj | 99.7% | +12.0% | LabG | 2026-06-08 | View COA → |
| Hxnet | 99.7% | +14.0% | LabG | 2026-06-06 | View COA → |
| Dankang Biohealth | 99.6% | -16.3% | LabE | 2026-06-01 | View COA → |
| Dankang Biohealth | 0.0% | -100.0% | LabE | 2026-05-27 | View COA → |
| Oupeptide | 96.4% | +35.0% | LabE | 2026-05-27 | View COA → |
| Shanghai Erp Peptide Biotechnology | 96.2% | +41.0% | LabE | 2026-05-27 | View COA → |
| Qing Li Peptide | 95.7% | +21.0% | LabE | 2026-05-27 | View COA → |
| Lilipeptide | 92.3% | +15.6% | LabE | 2026-05-27 | View COA → |
| Lilipeptide | 89.7% | +6.2% | LabE | 2026-05-27 | View COA → |
| crystalpeptides.eu | 99.931% | +1.7% | Janoshik | 2026-05-26 | View COA → |
| www.keruihk.com | 99.579% | +9.3% | Janoshik | 2026-05-25 | View COA → |
| Lipeptides | 99.5% | +14.0% | LabG | 2026-05-15 | View COA → |
| HB Peptide | 99.085% | +13.8% | Janoshik | 2026-05-13 | View COA → |
| Zlz Peptide | 99.3% | +3.0% | LabE | 2026-05-13 | View COA → |
| Amino Lair | 98.541% | +12.0% | Janoshik | 2026-05-12 | View COA → |
| Qing Li Peptide | 0.0% | -100.0% | LabE | 2026-05-06 | View COA → |
| Welon Peptide Solutions | 99.2% | -38.0% | LabE | 2026-05-06 | View COA → |
| Shanghai Erp Peptide Biotechnology | 99.9% | -6.5% | LabE | 2026-05-06 | View COA → |
| Guangzhou Jeep Biotechnology Jeep | 98.24% | +4.1% | Janoshik | 2026-05-06 | View COA → |
| Tsc Top Supplements China | 99.4% | -12.5% | LabE | 2026-05-06 | View COA → |
| Nulife Peptides | 99.9% | +1.0% | LabE | 2026-05-06 | View COA → |
| Nulife Peptides | 99.9% | -12.7% | LabE | 2026-05-06 | View COA → |
| Tianjin Ruiwang New Material Technology Co | 95.4% | -19.6% | LabE | 2026-05-06 | View COA → |
| Shanghai Baoju | 98.4% | +1.0% | LabE | 2026-05-05 | View COA → |
| Welon Peptide Solutions | 99.9% | +5.0% | LabE | 2026-05-05 | View COA → |
| Zenith Jove Peptide Zj | 98.5% | +1.2% | LabE | 2026-05-05 | View COA → |
| Nexaph | 99.5% | -14.0% | LabG | 2026-04-30 | View COA → |
| Tianjin Ruiwang New Material Technology Co | 0.0% | -100.0% | LabE | 2026-04-28 | View COA → |
| Zepeptide | 99.9% | -6.8% | LabE | 2026-04-28 | View COA → |
| Zepeptide | 99.9% | +6.6% | LabE | 2026-04-28 | View COA → |
| Welon Peptide Solutions | 99.3% | +32.0% | LabE | 2026-04-28 | View COA → |
| Dankang Biohealth | 98.3% | +6.0% | LabE | 2026-04-23 | View COA → |
| Welon Peptide Solutions | 98.5% | +7.0% | LabE | 2026-04-23 | View COA → |
| Zenith Jove Peptide Zj | 95.1% | -3.4% | LabE | 2026-04-23 | View COA → |
| Hxnet | 99.9% | +3.0% | LabE | 2026-04-23 | View COA → |
| Tianjin Ruiwang New Material Technology Co | 99.7% | +6.0% | LabG | 2026-04-21 | View COA → |
| Kerui Peptide HongKong Co., Ltd | 99.721% | +13.0% | Janoshik | 2026-04-21 | View COA → |
| AAA Peptides | 99.715% | +0.9% | Janoshik | 2026-04-21 | View COA → |
| Hk Peptides | 99.907% | +13.4% | Janoshik | 2026-04-10 | View COA → |
| Champion Peptide | 99.876% | +9.3% | Unknown | 2026-03-30 | View COA → |
| Champion Peptide | 99.876% | +9.3% | Unknown | 2026-03-30 | View COA → |
| Champion Peptide | 99.876% | — | Janoshik | 2026-03-30 | View COA → |
| Reta Peptide | 0.0% | -100.0% | LabG | 2026-03-29 | View COA → |
| Huaian Hanyou Peptide | 99.8% | -63.0% | LabG | 2026-03-29 | View COA → |
| Uther Peptide | — | +3.2% | Janoshik | 2026-03-27 | View COA → |
| Uther Peptide | 99.897% | +12.6% | Janoshik | 2026-03-27 | View COA → |
| cocerpeptides.com | 99.897% | +12.6% | Janoshik | 2026-03-27 | View COA → |
| Yiwu Aozuo Trading Co | 99.6% | +0.0% | LabG | 2026-03-25 | View COA → |
| Qingdao Sigma Chemical | 99.902% | +10.1% | Janoshik | 2026-03-25 | View COA → |
| Qingdao Sigma Chemical | 99.902% | +7.0% | Janoshik | 2026-03-25 | View COA → |
| Cellupep | 99.2% | +28.0% | LabG | 2026-03-19 | View COA → |
| Lipeptides | 97.3% | -5.8% | LabE | 2026-03-18 | View COA → |
Showing the 60 most recent of 436 TB-500 certificates.