Analyte | Sample number | Concentration of analyte (μg ml− 1) | Added concentration (μg ml−1) | Founded concentration (μg ml− 1) N = 3 (SD) | Relative recovery |
---|---|---|---|---|---|
Morphine | 1 | 2.5 | 5 | 7.5 (1.05) | 100 |
20 | 23.6 (1.19) | 105.5 | |||
2 | 17.8 | 5 | 21.4 (0.84) | 88 | |
20 | 38.4 (1.57) | 103 | |||
3 | 8.7 | 5 | 13.5 (0.41) | 96 | |
20 | 26.1 (0.77) | 87 | |||
Codeine | 1 | 2.2 | 5 | 7.12 (0.03) | 98.4 |
20 | 21.05 (0.53) | 94.3 | |||
2 | 5.3 | 5 | 9.98 (0.36) | 93.6 | |
20 | 27.24 (1.84) | 109.7 | |||
3 | 0.9 | 5 | 5.34 (0.62) | 88.8 | |
20 | 17.76 (1.10) | 84.3 | |||
Methadone | 1 | 1.9 | 5 | 5.96 (1.09) | 82 |
20 | 23.70 (1.31) | 109 | |||
2 | 3.2 | 5 | 8.35 (1.2) | 103 | |
20 | 24.76 (1.29) | 107.8 | |||
3 | 10.4 | 5 | 14.87 (0.57) | 89.4 | |
20 | 28.79 (0.12) | 91.95 |