SS-31 COA — Verified Certificate of Analysis Results
115 independent third-party certificates of analysis for SS-31, from 9 labs across 65 vendors (2023-11-03 to 2026-06-12).
Every SS-31 certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 115 published SS-31 certs in our corpus.
115
Certificates
9
Independent labs
99.8%
Median tested purity
49%
Within 10% of label dose
↑ 53%
Overdosed (≥ +7% vs label)
↓ 12%
Underdosed (≤ −7% vs label)
1 of these SS-31 certificates reported 0% of the labeled compound — a "sample does not contain" result. Always read the individual cert.
Verified SS-31 certificates of analysis
| Vendor | Purity | Dose vs label | Lab | Tested | |
|---|---|---|---|---|---|
| Reta Peptide | 99.5% | +13.2% | LabE | 2026-06-12 | View COA → |
| Reta Peptide | 99.9% | +8.6% | LabE | 2026-05-13 | View COA → |
| GYC | 99.699% | -0.2% | Janoshik | 2026-04-24 | View COA → |
| Peptide Gurus | 99.727% | +1.3% | Janoshik | 2026-04-24 | View COA → |
| Reta Peptide | 98.7% | -21.4% | LabE | 2026-04-23 | View COA → |
| Barn | 99.811% | — | barn | 2026-04-20 | View COA → |
| Barn | 99.811% | — | barn | 2026-04-20 | View COA → |
| Barn | 99.843% | — | Janoshik | 2026-04-20 | View COA → |
| MPS | 99.74% | +1.7% | Janoshik | 2026-04-16 | View COA → |
| (unknown) | 99.743% | -11.8% | Janoshik | 2026-04-16 | View COA → |
| MMAEK251 | 99.85% | +3.8% | Janoshik | 2026-04-14 | View COA → |
| GYC | 99.74% | — | Janoshik | 2026-04-14 | View COA → |
| (unknown) | 99.838% | +2.4% | Janoshik | 2026-04-13 | View COA → |
| Top Peptide | 99.897% | -13.2% | Unknown | 2026-04-10 | View COA → |
| (unknown) | 99.862% | +8.7% | Janoshik | 2026-04-10 | View COA → |
| Top Peptide | 99.897% | -13.2% | Janoshik | 2026-04-10 | View COA → |
| MKM Peptides | 99.784% | -11.3% | Janoshik | 2026-04-09 | View COA → |
| Top Peptide | 99.897% | -13.2% | Janoshik | 2026-04-08 | View COA → |
| Mix Peptides | 99.638% | — | Janoshik | 2026-04-02 | View COA → |
| Champion Peptide | 99.922% | — | Unknown | 2026-03-24 | View COA → |
| Champion Peptide | 99.922% | — | Unknown | 2026-03-24 | View COA → |
| Champion Peptide | 99.922% | +9.9% | Janoshik | 2026-03-24 | View COA → |
| Uther Peptide | 99.918% | +6.7% | Janoshik | 2026-03-20 | View COA → |
| Reta Peptide | 99.9% | +25.2% | LabG | 2026-03-13 | View COA → |
| www.wanxipeptide.com | 99.737% | +5.3% | Janoshik | 2026-03-11 | View COA → |
| FSD | 99.52% | +0.9% | Uzorak | 2026-03-03 | View COA → |
| (unknown) | 99.709% | +1.8% | Janoshik | 2026-02-12 | View COA → |
| Uther Thailand | 99.668% | +11.6% | Janoshik | 2026-02-10 | View COA → |
| GYC | 99.587% | +16.4% | Janoshik | 2026-01-28 | View COA → |
| Xi'an Taiye Chemical Co. | 99.708% | -4.8% | Janoshik | 2026-01-15 | View COA → |
| Homopeptide | 99.741% | -11.1% | Janoshik | 2026-01-07 | View COA → |
| Qingdao Sigma Chemical | 99.717% | +3.1% | Janoshik | 2025-12-15 | View COA → |
| Cathy | 99.768% | -1.2% | Janoshik | 2025-12-12 | View COA → |
| Mix Peptides | 99.703% | — | Janoshik | 2025-12-12 | View COA → |
| Nexaph | 99.66% | +4.7% | Janoshik | 2025-12-08 | View COA → |
| www.innhopeptide.com | 99.464% | +4.0% | Janoshik | 2025-11-24 | View COA → |
| www.innopeptide.com | 99.811% | +6.9% | Janoshik | 2025-11-24 | View COA → |
| Unknown - drop-shipper pseudonym (alicepeptides@gmail.com) | 99.304% | +8.2% | Unknown | 2025-11-21 | View COA → |
| Tianjin Finder Chemical Tfc | 99.304% | +8.2% | Janoshik | 2025-11-21 | View COA → |
| Kensingtonlabs.co.uk | 99.649% | +17.3% | Janoshik | 2025-11-14 | View COA → |
| Peptide Powerhouse | 99.772% | +17.4% | Janoshik | 2025-11-14 | View COA → |
| Transforma Peptides | 99.772% | +17.4% | Janoshik | 2025-11-14 | View COA → |
| 303peptides.com | 99.694% | — | Janoshik | 2025-11-12 | View COA → |
| cs@ruo.bio | 99.811% | +17.4% | Janoshik | 2025-11-12 | View COA → |
| Allen Biotechnology Co Abc | 99.492% | — | Janoshik | 2025-11-06 | View COA → |
| Allen Biotechnology Co Abc | 99.492% | — | Janoshik | 2025-11-06 | View COA → |
| Allen Biotechnology Co Abc | 99.492% | — | Janoshik | 2025-11-06 | View COA → |
| Allen Biotechnology Co Abc | 99.492% | — | Unknown | 2025-11-06 | View COA → |
| Allen Biotechnology Co Abc | 99.492% | +20.5% | Unknown | 2025-11-06 | View COA → |
| www.shpeptide.com | 99.647% | +12.4% | Janoshik | 2025-11-03 | View COA → |
| Shanxi Qianyecao Biotech Qyc | 99.756% | +5.8% | Janoshik | 2025-11-03 | View COA → |
| Shanxi Qianyecao Biotech Qyc | 99.745% | -3.0% | Janoshik | 2025-11-03 | View COA → |
| https://newwavepeptides.co.uk | 99.879% | +8.3% | Janoshik | 2025-10-30 | View COA → |
| Qingdao Sigma Chemical | 99.756% | — | Janoshik | 2025-10-30 | View COA → |
| Qingdao Sigma Chemical | 99.756% | -9.2% | Janoshik | 2025-10-30 | View COA → |
| Shanghai Sigma Audley Ssa | 95.293% | +12.6% | Peptide Test | 2025-10-13 | View COA → |
| Purupsipeptides.com | 99.71% | +24.4% | Janoshik | 2025-10-09 | View COA → |
| Qing Li Peptide | 99.159% | +2.0% | Janoshik | 2025-10-07 | View COA → |
| Edge Peptides | 99.878% | +17.6% | Janoshik | 2025-10-03 | View COA → |
| Uther Peptide | 99.878% | +17.6% | Janoshik | 2025-10-03 | View COA → |
Showing the 60 most recent of 115 SS-31 certificates.