Table 5. Intra-assay precision achieved from four calibration curves.
Vitamin B12 added concentration(mg/ml) | Vitamin B12 mean measured concentration(mg/ml) | S.D | C.V.(%) | Accuracy(%) |
0.33 | 0.337 | 0.85 | 1.73 | 102.1 |
0.0825 | 0.083 | 0.52 | 2.04 | 101.0 |
0.0412 | 0.040 | 0.49 | 2.02 | 99.3 |
0.0206 | 0.020 | 0.75 | 0.54 | 100.2 |