Table 4. Evaluation of the intra-day and inter-day accuracy and precision for the determination of DAS in rat plasma by the proposed UPLC-MS/MS method.
| Intra-day (n = 6) | Inter-day (n = 18) | |||
|---|---|---|---|---|
| Concentration added (ng/mL) | Mean recovery (%) ±RSDa | Er(%) | Mean recovery (%) ±RSD a | Er(%) |
| 1 | 98.21±1.94 | -1.79 | 97.88±1.78 | -2.12 |
| 3 | 96.33±4.36 | -3.67 | 96.97±1.53 | -3.03 |
| 250 | 96.61±4.05 | -3.39 | 97.21±2.11 | -2.79 |
| 450 | 95.96±3.25 | -4.04 | 99.83±6.50 | -0.17 |
aMean recovery (%) ± RSD of six determinations
Er%, Percentage relative error.