Measured concentration CV (%) RE (%)
Spiked Intraday (n=6) Interday (n=5) Intraday (n=6) Interday (n=5) Intraday (n=6) Interday (n=5)
0.25 0.28 ± 0.01 0.24 ± 0.02 4.36 8.78 11.55 -4.13
0.5 - 0.51 ± 0.02 - 4.52 - 1.42
1 - 1.01 ± 0.04 - 4.16 - 1.33
2 1.98 ± 0.02 1.98 ± 0.04 1.03 1.96 -0.85 -0.87
4 3.94 ± 0.03 3.94 ± 0.07 0.74 1.67 -1.57 -1.56
8 7.94 ± 0.03 8.10 ± 0.07 0.33 0.87 -0.79 1.22
12 11.81 ± 0.05 12.03 ± 0.14 0.47 1.18 -1.60 0.28
15 - 14.94 ± 0.13 - 0.88 - -0.40
All concentrations in nmol*mL-1; CV, coefficient of variation; RE, relative error [(measured concentration−spiked concentration)/spiked concentration×100].
Table 1: Intra-day and Inter-day precision and accuracy (n=5).