Recovery level

Sample (ng/spot)

Standard (ng/spot)

Amount found (ng/spot)

% Recovery

Mean (%) ± SD

% RSD

50%

800

400

1189.67

99.13

98.17 ± 0.99

1.015

1178.98

98.24

1165.76

97.14

100%

800

800

1618.15

101.13

100.50 ± 0.61

0.608

1598.58

99.91

1607.45

100.46

150%

800

1200

2016.54

100.82

100.03 ± 0.71

0.715

1988.63

99.43

1996.75

99.83