Precision for intra- and inter-assay for each molecule (n=10)
| Concentration mean±SD µg/mL (RSD %) | Intra-day | Inter-day | ||||
| Paracetamol | 3890±0 (0.23) | 9672±0 (0.16) | 11729±0 (0.08) | 3868±41 (1.05) | 9634±38 (0.39) | 11396±163 (1.43) |
| Alizapride | 189±1 (0.33) | 478±1 (0.21) | 588±1 (0.15) | 192±3 (1.68) | 478±4 (0.84) | 569±10 (1.70) |
| Ketorolac | 77±1 (1.16) | 192±1 (0.43) | 237±1 (0.49) | 77±2 (2.20) | 191±3 (1.31) | 230±4 (1.73) |
| Tramadol | 382±0 (0.11) | 964±1 (0.12) | 1180±1 (0.12) | 381±4 (1.00) | 958±9 (0.95) | 1146±18 (1.53) |