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Updated: Jul 15, 2026
Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry
Published on: October 2, 2016
A validated gas chromatographic-electron impact ionization mass spectrometric method for
Karl B Scheidweiler1, Marilyn A Huestis
1Chemistry and Drug Metabolism, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, 5500 Nathan Shock Dr., Baltimore, MD 21224, USA.
Abstract:
An analytical method to simultaneously quantify amphetamine (AMP), methamphetamine (MAMP), methylenedioxymethamphetamine (MDMA), methylenedioxyamphetamine (MDA), methylenedioxyethylamphetamine (MDEA), 3-hydroxy-4-methoxy-methamphetamine (HMMA) and 3-hydroxy-4-methoxy-amphetamine (HMA) in oral fluid is presented. Four hundred microlitres of oral fluid collected via expectoration was extracted by solid phase extraction. GC/MS-EI with selected ion monitoring (SIM) yielded linear curves 5-250 ng/mL for AMP, MAMP, MDMA and MDEA, 5-500 ng/mL for MDA and 25-1,000 ng/mL for HMA and HMMA. Recoveries were greater than 85%, accuracy 87-104%, and precision less than 8.3% coefficient of variation. This assay will be used to investigate distribution of sympathomimetic amines into human oral fluid following controlled drug administration.
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