Recovery level

Sample (µg/mL)

Standard (µg/mL)

Amount found (µg/mL)

% Recovery

Mean (%) ± SD

% RSD

50%

0.4

0.4

0.598

0.599

0.602

99.66

99.83

100.33

99.94 ± 0.348

0.348

100%

0.4

0.6

0.813

0.796

0.804

101.62

99.50

100.52

100.54 ± 1.061

1.055

150%

0.4

0.8

0.995

1.014

0.988

99.59

101.40

98.87

99.95 ± 1.304

1.304