Validation (QC) solutions (μg/mL)

50

100

250

Accuracy (% recovery)

Day 1

100.6

100.0

100.1

Day 2

101.4

100.4

100.9

Day 3

100.5

99.7

100.5

Precision (% RSD)

Day 1

0.4

0.4

0.4

Day 2

0.6

0.2

0.2

Day 3

0.6

0.5

0.4