Selective and Accurate Determination Method of Propofol in Human Plasma by Mixed-Mode Cation Exchange Cartridge and GC-MS

Table 5

The quantitation results of concentrated propofol standards with two different kinds of evaporation.

Added methanol volume (μL)	0	100	400	900	1900
Recovery (%) of nitrogen gas evaporation
Recovery (%) of centrifugal vacuum evaporation

Recovery was calculated by dividing the area of 0 μL methanol added propofol sample.
All the recoveries are displayed with mean values ± standard error.