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

Table 6

Stability assays () of the developed method.

Nominal concentration (µg mL^−1)	Short-term room temperature (8 h)		Autoinjector (24 h)		Freeze and thaw cycles (12 h, 3 cycles)
	Accuracy; RE (%)	Precision; RSD (%)	Accuracy; RE (%)	Precision; RSD (%)	Accuracy; RE (%)	Precision; RSD (%)
4.0	2.3	2.4	4.2	2.5	1.6	3.2
60	5.2	4.3	5.6	4.2	5.8	4.1

RE, relative error expressed as percentage (%).
RSD, relative error deviation expressed as percentage (%).