Drug Nominal conc. % Recovery Standard deviation % CV Aprepitant         HQC 3605.580 ng/ml 71.9 4.661 6.5 MQC 2098.448 ng/ml 68.0 2.585 3.8 LQC 25.181 ng/ml 63.8 2.718 4.3 Quetiapine 400 ng/ml 77.7 4.333 5.6

Table 4: Extraction recovery data of analyte and internal standard.