Table 2.
Intraday and interday accuracies of LC-MS/MS for determination of risperidone in serum
| Nominal concentration (ng/ml) | Relative recovery (%) |
Mean±SD (%) | RSD (%) | |||||
| 1 | 2 | 3 | 4 | 5 | ||||
| Intraday | 0.25 | 100.00 | 88.00 | 88.00 | 80.00 | 88.00 | 88.80±7.16 | 8.06 |
| 5.00 | 106.20 | 105.80 | 108.60 | 104.40 | 109.20 | 106.84±2.01 | 1.88 | |
| 50.00 | 101.78 | 106.74 | 104.96 | 105.96 | 106.14 | 105.12±1.97 | 1.87 | |
| Interday | 0.25 | 88.00 | 88.00 | 88.00 | 96.00 | 96.00 | 91.20±4.38 | 4.80 |
| 5.00 | 106.80 | 106.80 | 99.40 | 103.60 | 102.20 | 103.76±3.16 | 3.04 | |
| 50.00 | 105.06 | 102.44 | 100.64 | 102.04 | 102.68 | 102.57±1.60 | 1.56 | |