Table 4 Accuracy of determination of the three anesthetics.

From: A pilot study on LC–MS/MS quantification of remifentanil, etomidate, and rocuronium in maternal and fetal serum microsamples

Analyte

Level

Concentration (ng/ml)

RSD (%)

Recovery (%)

Nominal

Measured*

Remifentanil

Low

0.50

0.53 ± 0.04

7.55

106.00

Interm

2.00

2.27 ± 0.17

7.49

113.50

High

4.00

4.38 ± 0.47

10.73

109.50

Etomidate

Low

125.00

127.45 ± 10.04

7.88

101.96

Interm

500.00

518.81 ± 28.94

5.58

103.76

High

1000.00

1143.26 ± 115.00

14.48

114.33

Rocuronium

Low

1000.00

1096.43 ± 118.21

10.78

109.64

Interm

4000.00

4160.96 ± 261.63

6.29

104.02

High

8000.00

7430.55 ± 816.68

10.99

92.88

  1. Values are mean ± SD, unless otherwise noted. Interm, intermediate.
  2. * From five measurements made once daily on five consecutive days.