Table 5.
Intra-assay and inter-assay precision and accuracy
| Metabolites | Nominal Concentrations (ng/mL) | Accuracy (%) | Intra-assay precision (CV%) | Inter-assay precision (CV%) |
|---|---|---|---|---|
| Acetaminophen | 10 | 98.0 | 3.2 | 9.9 |
| 40 | 101.5 | 2.3 | 5.4 | |
| 80 | 107.7 | 3.1 | 6.2 | |
| 4′-Hydroxy diclofenac | 100 | 99.4 | 3.7 | 4.7 |
| 400 | 113.7 | 7.2 | 3.6 | |
| 800 | 98.3 | 7.6 | 4.7 | |
| 4-Hydroxy mephenytoin | 20 | 103.1 | 6.4 | 7.0 |
| 60 | 109.4 | 14.2 | 3.8 | |
| 100 | 100.4 | 8.1 | 15.0 | |
| Dextrorphan | 2 | 107.5 | 6.8 | 6.0 |
| 10 | 105.5 | 2.8 | 7.6 | |
| 50 | 97.7 | 1.1 | 11.3 | |
| 1′-Hydroxy midazolam | 10 | 106.3 | 3.5 | 2.5 |
| 40 | 111.2 | 3.0 | 6.0 | |
| 80 | 98.3 | 4.5 | 6.2 |