Table 1 Accuracy percentage based on the measured warfarin concentrations of standard points and QC samples. The mean measurements are for day 1, day 2 and day 3
Final calculated concentration (ng/ml) | Mean measured concentration (ng/ml) | Standard Deviation (SD) | Coefficient of Variation (%CV) | Accuracy (%) |
|---|---|---|---|---|
100 | 96.84 | 2.19 | 2.27 | 96.84 |
200 | 201.61 | 9.15 | 4.54 | 100.8 |
500 | 495.13 | 19.45 | 3.93 | 99.03 |
1000 | 981.22 | 23.39 | 2.38 | 98.12 |
2000 | 1969.12 | 53.24 | 2.71 | 98.46 |
3000 | 2950.57 | 23.15 | 0.78 | 98.35 |
4000 | 3945.3 | 63.52 | 1.61 | 98.63 |
QC low (300) | 300.28 | 12.47 | 4.15 | 100.09 |
QC mid (1800) | 1747.26 | 28.48 | 1.63 | 97.07 |
QC high (3500) | 3493.65 | 239.92 | 6.87 | 99.82 |