Table 5.
Interassay precision and accuracy: precision and accuracy over 3 days with replicates of 6 for a total of 18 samples.
| Drug/Metabolite | LLOQ | LQC | MQC | HQC | ||||
|---|---|---|---|---|---|---|---|---|
| %CV | %E | %CV | %E | %CV | %E | %CV | %E | |
| Amphetamine∗ | 9.25 | 7.37 | 4.31 | 11.13 | 4.22 | −3.09 | 8.02 | 0.30 |
| Methamphetamine∗ | 8.52 | 2.81 | 3.34 | 0.69 | 4.42 | −2.40 | 4.66 | 2.08 |
| D-amphetamine | 3.95 | 13.09 | 4.54 | 10.70 | 1.80 | −1.52 | 3.55 | 4.47 |
| L-amphetamine | 4.12 | 10.00 | 3.04 | 11.52 | 2.07 | −1.85 | 2.94 | −2.81 |
| D-methamphetamine | 4.44 | 3.17 | 3.98 | 1.30 | 4.04 | 0.21 | 4.89 | 11.05 |
| L-methamphetamine | 5.54 | 3.21 | 4.98 | 2.33 | 5.32 | 0.52 | 5.07 | 12.66 |
∗ Indicates combined D- and L-.