Every FOXO4 certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 9 published FOXO4 certs in our corpus.
9
Certificates
1
Independent labs
99.4%
Median tested purity
67%
Within 10% of label dose
Verified FOXO4 certificates of analysis
| Vendor | Purity | Dose vs label | Lab | Tested | |
|---|---|---|---|---|---|
| classified | 99.472% | +27.7% | Janoshik | 2026-01-28 | View COA → |
| Xcel Peptides | 99.423% | — | Janoshik | 2025-12-16 | View COA → |
| Xcel Peptides | 99.401% | — | Janoshik | 2025-12-16 | View COA → |
| 303peptides.com | 99.724% | — | Janoshik | 2025-12-12 | View COA → |
| (unknown) | 99.385% | +4.9% | Janoshik | 2025-12-12 | View COA → |
| SubiePeptides | 99.242% | +6.9% | Janoshik | 2025-07-16 | View COA → |
| Xcel Peptides | 99.518% | — | Janoshik | 2025-05-30 | View COA → |
| Bulk Peptide Supply | 99.232% | — | Janoshik | 2025-05-07 | View COA → |
| Verified Peptides | 99.489% | — | Janoshik | 2025-03-05 | View COA → |