Matrix | Spiked amount (ng/mL) | Stability (%) | |||
Freeze-thaw stability | Short-term stability | Long-term stability | Post-preparative stability | ||
Plasma |
| (?20˚C, 3 cycles) | (ice-cold condition, 2 hours) | (?20˚C, 9 weeks) | (4˚C, 24 hours) |
| 16 | 102.5 | 99.6 | 90.8 | 110.7 |
| 800 | 100.6 | 101.1 | 88.8 | 100.5 |
Lung |
| (?20˚C, 2 cycles) | (ice-cold condition, 2 hours) | (?20˚C, 4 weeks) | (4˚C, 24 hours) |
homogenate | 30 | 90.0 | 94.0 | 86.6 | 98.5 |
| 800 | 89.7 | 94.1 | 92.9 | 101.6 |
|
| (?20˚C, 3 cycles) |
| (?20˚C, 6 weeks) |
|
| 30 | 82.7 |
| 80.5 |
|
| 800 | 81.4 |
| 90.6 |
|