Lab prepared mixtureµg/mL

FEB/DIC

ratio

% Recovery

FEB

DIC

FEB

DIC

0.8

2

2:5*

98.63

101.55

2

4

1:2

99.20

100.33

4

2

2:1

99.73

100.25

2

2

1:1

100.35

99.15

1.2

3

2:5*

100.42

99.87

Mean % ± SD

99.67% ± 0.763

100.23% ± 0.873