Intra-batch validation (n=7)
  with IS without IS with IS without IS with IS without IS with IS without IS
Nominal concentration (μg/mL) 5.0 15.0 80.0 320.0
Arithmetic mean (ug/mL) 5.4 5.1 15.0 14.9 79.2 78.0 316.9 295.9
Precision (CV%) 9.6% 9.2% 8.9% 8.2% 1.0% 1.8% 2.8% 1.5%
Accuracy (%) 108.9% 101.1% 99.9% 99.3% 98.9% 97.5% 99.0% 92.5%
Inter-batch (n=21)
  with IS without IS with IS without IS with IS without IS with IS without IS
Nominal concentration (μg/mL) 5.0 15.0 80.0 320.0
Arithmetic mean (ug/mL) 5.1 4.7 15.6 15.1 82.6 81.3 319.0 307.1
Precision (CV%) 9.4% 10.9% 6.9% 6.4% 4.6% 5.0% 5.5% 6.2%
Accuracy (%) 101.9% 94.4% 104.1% 101.2% 103.2% 101.6% 99.7% 96.0%
Table 1: Accuracy and precision data for hydroxocobalamin in human plasma.
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