Nominal Concentration (ng/mL)

Day

Mean concentration found (ng/mL)^a

Mean^b

RSD (%)

Accuracy (%)

1.5

1

1.472

1.496

8.47

99.7

2

1.383

3

1.633

50

1

45.290

47.964

10.48

95.9

2

44.838

3

53.763

85

1

86.787

85.157

1.70

100.2

2

84.040

3

84.643