Semaglutide COA — Verified Certificate of Analysis Results
691 independent third-party certificates of analysis for Semaglutide, from 8 labs across 207 vendors (2022-09-15 to 2026-06-12).
Every Semaglutide certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 691 published Semaglutide certs in our corpus.
691
Certificates
8
Independent labs
99.7%
Median tested purity
53%
Within 10% of label dose
↑ 50%
Overdosed (≥ +7% vs label)
↓ 11%
Underdosed (≤ −7% vs label)
7 of these Semaglutide certificates reported 0% of the labeled compound — a "sample does not contain" result. Always read the individual cert.
Verified Semaglutide certificates of analysis
| Vendor | Purity | Dose vs label | Lab | Tested | |
|---|---|---|---|---|---|
| Hxnet | 99.8% | +10.0% | LabG | 2026-06-12 | View COA → |
| Hxnet | 99.7% | +9.3% | LabE | 2026-06-02 | View COA → |
| Hk Peptides | 99.9% | +1.0% | LabE | 2026-06-01 | View COA → |
| Longevity Pro Labs | 99.653% | — | Janoshik | 2026-05-18 | View COA → |
| Longevity Pro Labs | 99.458% | — | Janoshik | 2026-05-18 | View COA → |
| Zlz Peptide | 99.9% | -41.9% | LabE | 2026-05-13 | View COA → |
| Zlz Peptide | 99.9% | -6.5% | LabE | 2026-05-06 | View COA → |
| Hk Peptides | 99.9% | -52.1% | LabE | 2026-05-05 | View COA → |
| NouvePen | 99.482% | -0.4% | Janoshik | 2026-04-30 | View COA → |
| Hxnet | 99.9% | -0.9% | LabE | 2026-04-28 | View COA → |
| Aminos Research | 99.9% | -4.6% | LabE | 2026-04-28 | View COA → |
| Aminos Research | 99.2% | -2.3% | LabE | 2026-04-28 | View COA → |
| Tianjin Ruiwang New Material Technology Co | 99.9% | -2.0% | LabE | 2026-04-28 | View COA → |
| Shanxi Qianyecao Biotech Qyc | 99.874% | +1.7% | Janoshik | 2026-04-22 | View COA → |
| (unknown) | 99.648% | +15.0% | Janoshik | 2026-04-10 | View COA → |
| Top Peptide | 99.644% | +14.9% | Unknown | 2026-04-08 | View COA → |
| Top Peptide | 99.644% | +14.9% | Janoshik | 2026-04-08 | View COA → |
| Top Peptide | 99.644% | +14.9% | Janoshik | 2026-04-08 | View COA → |
| — | 99.711% | — | Janoshik | 2026-04-07 | View COA → |
| GYC | 99.867% | +8.2% | Peptide Test | 2026-03-30 | View COA → |
| GYC | 99.897% | +10.0% | Peptide Test | 2026-03-30 | View COA → |
| Peptislim | 99.9% | +21.0% | LabG | 2026-03-25 | View COA → |
| Bulk Peptide Supply | 99.9% | +1.0% | LabE | 2026-03-18 | View COA → |
| www.wanxipeptide.com | 99.774% | +5.2% | Janoshik | 2026-03-11 | View COA → |
| Nexaph | 99.2% | +9.0% | LabE | 2026-03-06 | View COA → |
| Tsc Top Supplements China | 99.8% | +8.0% | LabG | 2026-03-04 | View COA → |
| Chilton Labs / www.chiltonlabs.ru | 99.906% | — | Janoshik | 2026-03-04 | View COA → |
| Risynth Bio | 99.9% | +5.5% | LabE | 2026-03-02 | View COA → |
| Peptide Sciences | 99.5% | +12.0% | LabG | 2026-03-01 | View COA → |
| Zenith Jove Peptide Zj | 0.0% | -100.0% | LabE | 2026-02-26 | View COA → |
| Qingdao Sigma Chemical | 99.885% | — | Janoshik | 2026-02-26 | View COA → |
| Qingdao Sigma Chemical | 99.603% | — | Janoshik | 2026-02-26 | View COA → |
| Qingdao Sigma Chemical | 99.603% | +2.7% | Janoshik | 2026-02-26 | View COA → |
| Qingdao Sigma Chemical | 99.885% | -3.8% | Janoshik | 2026-02-26 | View COA → |
| EZP | 99.812% | +0.0% | Janoshik | 2026-02-24 | View COA → |
| AMP | 99.812% | +0.0% | Janoshik | 2026-02-24 | View COA → |
| Modern Research LLC | 99.842% | -0.2% | Janoshik | 2026-02-24 | View COA → |
| White Claw Labs | 99.851% | -8.6% | Janoshik | 2026-02-20 | View COA → |
| Bfflist Amo | 99.737% | +2.1% | Peptide Test | 2026-02-20 | View COA → |
| Bfflist Amo | 99.903% | +1.2% | Peptide Test | 2026-02-20 | View COA → |
| Hxnet | 99.8% | -3.3% | LabE | 2026-02-18 | View COA → |
| Chilton Labs / www.chiltonlabs.ru | 99.666% | — | Janoshik | 2026-02-10 | View COA → |
| Chilton Labs / www.chiltonlabs.ru | 99.817% | — | Janoshik | 2026-02-10 | View COA → |
| Zlz Peptide | 99.8% | -23.0% | LabG | 2026-02-10 | View COA → |
| Modern Research LLC | 99.299% | +17.0% | Janoshik | 2026-02-09 | View COA → |
| Bulk Peptide Wholesale | 99.9% | +2.0% | LabE | 2026-02-06 | View COA → |
| Bulk Peptide Wholesale | 99.9% | +3.0% | LabE | 2026-02-06 | View COA → |
| Peptislim | 99.8% | +9.3% | LabG | 2026-02-04 | View COA → |
| HM PEPTIDE | 99.718% | +27.5% | Unknown | 2026-02-03 | View COA → |
| Oupeptide | 0.0% | -100.0% | LabE | 2026-01-29 | View COA → |
| (unknown) | 99.683% | +11.0% | Janoshik | 2026-01-29 | View COA → |
| Zlz Peptide | 99.9% | -15.7% | LabG | 2026-01-26 | View COA → |
| Hk Peptides | 99.9% | +8.7% | LabG | 2026-01-26 | View COA → |
| Modern Research LLC | 99.625% | +30.0% | Janoshik | 2026-01-16 | View COA → |
| Peptislim | 98.19% | -59.5% | LabE | 2026-01-15 | View COA → |
| Zlz Peptide | 99.8% | +26.0% | LabG | 2026-01-15 | View COA → |
| Sry Labs | 99.8% | -5.3% | LabG | 2026-01-15 | View COA → |
| Peptide Sciences | 99.8% | +20.0% | LabG | 2026-01-15 | View COA → |
| Chameleon Peptides | 99.718% | +10.8% | Janoshik | 2026-01-13 | View COA → |
| Panda Peptides | 99.718% | +10.8% | Janoshik | 2026-01-13 | View COA → |
Showing the 60 most recent of 691 Semaglutide certificates.