Becker Global Labs
Analytical Services · Boston, MA · USA
Certificate of Analysis
Doc COA-TESTA20-0528
Verification COA4864
Testagen
20 mg · Lot TESTA20-0528
Lot numberTESTA20-0528
Fill size20 mg
AppearanceWhite lyophilized powder
Molecular weight447.4 g/mol
Storage-20°C, protect from light
Sample receivedJune 1, 2026
Date of analysisJune 17, 2026
Retest dateJun 17, 2028
StatusReleased
Analytical results
| Test | Method | Specification | Result |
|---|---|---|---|
| Identity: Testagen | MALDI-MS | Testagen | Testagen |
| Content | HPLC quantitation | 20 mg | 20.32 mg |
| Overall purity | RP-HPLC (214 nm) | ≥ 99.0% | 99.9% |
| Endotoxin | USP <85> | < 0.5 EU/mL | <0.05 EU/mL |
| Heavy metals | USP <232> | ≤ 10 ppm | <0.01 ppm |
| Appearance | Visual | White to off-white lyophilized powder | Conforms |
| Water content | Karl Fischer | ≤ 8.0% | Conforms |
| Sterility | USP <71> | No growth | No growth |
HPLC chromatogram retention time: 15.67 min · Identity confirmed via MALDI-MS
Conclusion
This lot conforms to all release specifications listed above.
Approved by
D. Whitfield, PhD
Quality Control Manager · June 17, 2026
For laboratory and research use only. Not for human or veterinary use.