Research Article

LC-MS/MS Method for Simultaneous Quantification of Dexmedetomidine, Dezocine, and Midazolam in Rat Plasma and Its Application to Their Pharmacokinetic Study

Table 3

The intra- and interday precision and accuracy of dexmedetomidine, dezocine, and midazolam in rat plasma (mean ± SD, 3 days, 6 replicates per day).

AnalytesSpiked conc. (ng/mL)Intraday ()Interday ()
Measured conc. (ng/mL)Precision (RSD, %)Accuracy (%)Measured conc. (ng/mL)Precision (RSD, %)Accuracy (%)

Dexmedetomidine0.10.119 ± 0.01714.28119.000.115 ± 0.01513.04115.00
0.20.203 ± 0.02210.83101.500.197 ± 0.02110.6698.50
5.04.63 ± 0.5712.3192.604.85 ± 0.398.0497.00
8078.41 ± 4.956.3198.0179.36 ± 7.239.1199.20

Dezocine0.10.117 ± 0.01512.82117.000.114 ± 0.01210.53114.00
0.20.206 ± 0.0188.74103.000.203 ± 0.0209.85101.50
5.05.38 ± 0.519.48107.605.26 ± 0.427.98105.20
8085.15 ± 7.388.67106.4381.33 ± 5.867.21101.26

Midazolam0.20.226 ± 0.03214.16113.000.214 ± 0.02813.08107.00
0.40.442 ± 0.05211.76110.500.414 ± 0.0389.18103.50
10.010.78 ± 0.7146.62107.809.88 ± 0.828.3098.80
160155.84 ± 13.868.8997.40159.14 ± 9.425.9299.46