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        Identification and Quantitation of Amphetamine, Methamphetamine, MDMA, Pseudoephedrine, and Ephedrine in Blood, Plasma, and Serum Using Gas Chromatogr

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        Amphetamine, methamphetamine, MDMA, pseudoephedrine, and ephedrine are measured in blood, serum, and plasma using gas chromatography coupled to mass spectrometry (GC/MS). Following a simple liquid–liquid extraction, analytes are derivatized with heptafluorobutyric anhydride (HFBA) and 1 �L injected onto a HP-5MS 15-meter capillary column. Quantitation of each analyte is accomplished using a multi-point calibration curve and deuterated internal standards. The method provides a simple, robust, and reliable means to identify and measure these analytes.
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