The elution efficiency of 18F-FDPA from the QMA cartridge using different kinds of stock solution
| No. | Amount of TBAOMs (mg) | H2O (mL) | ACN (mL) | Elution efficiency (%) |
| 1 | 12 | 0.3 | 0.7 | 37.8 |
| 2 | 12 | 0.3 | 0.3 | 78.2 |
| 3 | 12 | 0.4 | 0.6 | 73.2 |
| 4 | 12 | 0.4 | 0.4 | 83.2 |
| 5 | 12 | 0.4 | 0.2 | 85.3 |
| 6 | 15 | 0.4 | 0.4 | 90.5 |
| 7 | 20 | 0.3 | 0.3 | 92.3 |
| 8 | 20 | 0.4 | 0.4 | 98.3 |