Spiked concentration (ng/mL)

Relative recovery (%)

Absolute recovery (%)

5

95.17 ± 3.62

83.92 ± 4.31

50

96.62 ± 1.17

85.53 ± 2.26

150

94.83 ± 1.89

88.26 ± 1.87

Data were expressed as mean ± SD (n = 5)
Table 3: The recovery of nifedipine in human plasma samples.