Tirzepatide COA — Verified Certificate of Analysis Results
3966 independent third-party certificates of analysis for Tirzepatide, from 9 labs across 418 vendors (2022-12-02 to 2026-06-26).
Every Tirzepatide certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 3966 published Tirzepatide certs in our corpus.
3966
Certificates
9
Independent labs
99.8%
Median tested purity
60%
Within 10% of label dose
↑ 43%
Overdosed (≥ +7% vs label)
↓ 12%
Underdosed (≤ −7% vs label)
55 of these Tirzepatide certificates reported 0% of the labeled compound — a "sample does not contain" result. Always read the individual cert.
Verified Tirzepatide certificates of analysis
| Vendor | Purity | Dose vs label | Lab | Tested | |
|---|---|---|---|---|---|
| Qingdao Saber Technology Pharma Qst | 99.828% | +10.0% | Qingdao Saber Technology (QST) | 2026-06-26 | View COA → |
| Qingdao Saber Technology Pharma Qst | 99.828% | +10.0% | Janoshik | 2026-06-26 | View COA → |
| liliPetide Technology Co., Ltd. | 99.845% | +18.6% | Janoshik | 2026-06-23 | View COA → |
| Xian Yihang Technology | 99.9% | -4.7% | LabE | 2026-06-22 | View COA → |
| Rethel Jinan New Energy Technology | 0.0% | -100.0% | LabG | 2026-06-17 | View COA → |
| Qing Li Peptide | 99.9% | +12.0% | LabG | 2026-06-17 | View COA → |
| Peptislim | 99.8% | -11.5% | LabG | 2026-06-17 | View COA → |
| Peptislim | 99.7% | +31.5% | LabG | 2026-06-17 | View COA → |
| Peptislim | 99.8% | +18.7% | LabG | 2026-06-17 | View COA → |
| Dankang Biohealth | 0.0% | -100.0% | LabG | 2026-06-17 | View COA → |
| Bfflink | 99.9% | -14.0% | LabG | 2026-06-17 | View COA → |
| Shandong Aishi Biotechnology | 99.8% | +9.0% | LabG | 2026-06-17 | View COA → |
| Hangzhou Mandy Biotechnology | 99.7% | +14.5% | LabG | 2026-06-17 | View COA → |
| Zhuoyue Biotechnology | 99.9% | -11.5% | LabE | 2026-06-16 | View COA → |
| Uwa Elite Peptides | 99.9% | -3.8% | LabE | 2026-06-16 | View COA → |
| Haikou Mingheng Biotechnology | 99.9% | +2.0% | LabE | 2026-06-16 | View COA → |
| Guangzhou Aoyu | 0.0% | -100.0% | LabE | 2026-06-16 | View COA → |
| Xingruida Xdr | 99.8% | +15.0% | LabG | 2026-06-16 | View COA → |
| Shandong Aishi Biotechnology | 99.9% | -7.7% | LabE | 2026-06-16 | View COA → |
| Reta Peptide | 99.9% | -7.0% | LabE | 2026-06-16 | View COA → |
| Reta Peptide | 99.9% | -9.3% | LabE | 2026-06-16 | View COA → |
| HM PEPTIDE | 99.9% | +6.2% | LabG | 2026-06-16 | View COA → |
| Penguin Peptides | 99.9% | -4.4% | LabE | 2026-06-16 | View COA → |
| Huaian Hanyou Peptide | 99.9% | -5.3% | LabE | 2026-06-16 | View COA → |
| Inno Peptides | 99.9% | -15.7% | LabE | 2026-06-16 | View COA → |
| UWA Biotech | 99.689% | +13.6% | Janoshik | 2026-06-16 | View COA → |
| Qihang Peptide | 99.853% | +9.0% | Janoshik | 2026-06-16 | View COA → |
| Qihang Peptide | 99.707% | +9.0% | Janoshik | 2026-06-16 | View COA → |
| Zlz Peptide | 99.9% | -8.0% | LabE | 2026-06-15 | View COA → |
| Zlz Peptide | 99.9% | -11.0% | LabE | 2026-06-15 | View COA → |
| Nexaph | 99.9% | -8.3% | LabE | 2026-06-15 | View COA → |
| Nexaph | 99.9% | -9.0% | LabE | 2026-06-15 | View COA → |
| Guangzhou Aoyu | 99.9% | -8.7% | LabE | 2026-06-15 | View COA → |
| Reta Peptide | 99.9% | -10.7% | LabE | 2026-06-15 | View COA → |
| Hybiopeptides | 99.9% | -39.3% | LabE | 2026-06-15 | View COA → |
| HM PEPTIDE | 99.9% | -14.0% | LabE | 2026-06-15 | View COA → |
| HM PEPTIDE | 85.9% | -24.2% | LabE | 2026-06-15 | View COA → |
| Lumira | 99.8% | -18.0% | LabE | 2026-06-15 | View COA → |
| Huayi Biotechnology | 99.9% | -12.0% | LabE | 2026-06-15 | View COA → |
| Cactus Peptides | 99.9% | -16.7% | LabE | 2026-06-15 | View COA → |
| Cactus Peptides | 99.9% | -18.0% | LabE | 2026-06-15 | View COA → |
| Zlz Peptide | 99.8% | +23.0% | LabG | 2026-06-12 | View COA → |
| Nexaph | 99.9% | -2.7% | LabE | 2026-06-12 | View COA → |
| Lilipeptide | 99.8% | +33.4% | LabE | 2026-06-12 | View COA → |
| Allen Biotechnology Co Abc | 99.7% | +14.5% | LabG | 2026-06-12 | View COA → |
| Top Peptide | 99.6% | +6.0% | LabG | 2026-06-12 | View COA → |
| Reta Peptide | 99.8% | +1.4% | LabG | 2026-06-12 | View COA → |
| Henan Sahe Peptide | 99.7% | -9.2% | LabG | 2026-06-12 | View COA → |
| Shanghai Erp Peptide Biotechnology | 99.9% | -3.7% | LabE | 2026-06-12 | View COA → |
| Lumira | 99.9% | -21.0% | LabE | 2026-06-12 | View COA → |
| Lumira | 99.9% | -11.8% | LabE | 2026-06-12 | View COA → |
| Shanghai Wibson Biotechnology Wbs | 99.9% | -1.6% | LabE | 2026-06-12 | View COA → |
| M Peptides | 99.9% | -6.5% | LabE | 2026-06-12 | View COA → |
| aura | 99.904% | +12.0% | Janoshik | 2026-06-10 | View COA → |
| — | 99.818% | +28.8% | Janoshik | 2026-06-09 | View COA → |
| Rethel Jinan New Energy Technology | 0.0% | -100.0% | LabG | 2026-06-08 | View COA → |
| Rethel Jinan New Energy Technology | 0.0% | -100.0% | LabG | 2026-06-08 | View COA → |
| Lisa Biopeptide | 0.0% | -100.0% | LabG | 2026-06-08 | View COA → |
| Qingdao Sigma Chemical | 99.9% | +11.0% | LabG | 2026-06-08 | View COA → |
| Xian Yihang Technology | 99.8% | +5.2% | LabG | 2026-06-08 | View COA → |
Showing the 60 most recent of 3966 Tirzepatide certificates.