Sharp M E
J Anal Toxicol. 1987 Jan-Feb;11(1):8-11. doi: 10.1093/jat/11.1.8.
A rapid high resolution gas chromatographic method for screening acidic and neutral drugs in blood is described. The procedure involves a single extraction with ethyl acetate. Using flame ionization detection, without derivatization and with on-column methylation, more than 60 drugs of toxicologic importance are detected.