*Nominal Level *Measured Level of VD-2 *Measured Level of VD-3
  Mean SD CV (%) Bias (%) Mean SD CV (%) Bias (%)
Intra-run
15 15.3 1.3 8.4 2.0 16.0 0.9 5.7 6.6
50 55.3 1.0 1.8 10.6 50.9 3.8 7.4 1.8
90 83.1 3.7 4.4 -7.6 97.3 1.1 1.4 8.1
Inter-run
15 14.8 1.2 8.2 -1.3 15.8 1.0 6.1 5.3
50 52.5 4.1 7.8 5.0 48.8 4.5 9.2 -2.4
90 86.0 5.6 6.5 -4.4 78.2 2.0 2.6 -13.1
*Nominal Level *Measured Level of 25(OH)VD-2 *Measured Level of 25(OH)VD-3
  Mean SD CV (%) Bias (%) Mean SD CV (%) Bias (%)
Intra-run
15 16.1 0.9 5.7 7.3 14.3 1.4 9.7 -4.6
50 50 2.1 3.9 7.8 54.9 2.7 4.8 9.7
90 97.4 6.1 6.2 8.2 97.3 4.4 4.5 8.4
Inter-run
15 16.4 0.7 4.0 9.3 14.7 1.3 8.6 -1.9
50 52.7 4.0 7.5 5.4 54.8 2.4 4.4 9.6
90 94.4 8.1 8.6 4.8 94.1 7.1 7.6 4.5
*nanogram/mL. SD, standard deviation, CV, standard deviation divided by mean measured concentration x 100. Bias, measured level - nominal level divided by nominal level x 100.
Table 2: Intra and inter-run precision and bias
Goto home»