Determination of Levetiracetam in Human Plasma by Dispersive Liquid-Liquid Microextraction Followed by Gas Chromatography-Mass Spectrometry

Figure 4

GC-MS chromatograms obtained from the analysis of an extracted patient plasma sample: (a) patient sample after the levetiracetam intake (plasma concentration of levetiracetam was 25 μg mL⁻¹) and (b) a drug-free plasma sample; SIM mode is (I) m/z 123 and (II) m/z 193.

(a)

(b)