Gas chromatographic determination of methamphetamine and its metabolite amphetamine in human plasma and urine following conversion to N-propyl derivatives.
A gas chromatographic method for the simultaneous determination of methamphetamine and its metabolite amphetamine in human plasma and urine is described. The method utilizes reductive alkylation with propionaldehyde and sodium borohydride to produce N-propyl derivatives, which have excellent chromatographic properties. Structural analogs of the analytes, p-methylmethamphetamine and p-methylamphetamine, are used as internal standards. The method has good precision and accuracy for concentrations ranging from less than 10 ng/ml to 5000 ng/ml and has been used to measure plasma concentrations as part of a pharmacokinetic/pharmacodynamic study of methamphetamine in humans.
Jacob
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P
Drug Dependence Research Center, Langley Porter Psychiatric Institute, University of California, San Francisco 94143, USA.
Tisdale
E C
EC
Panganiban
K
K
Cannon
D
D
Zabel
K
K
Mendelson
J E
JE
Jones
R T
RT
D000447:Aldehydes; D000478:Alkylation; D000661:Amphetamine / Q000032:analysis* / Q000097:blood / Q000652:urine; D001711:Biotransformation; D001894:Borohydrides; D002849:Chromatography, Gas; D006801:Humans; D007202:Indicators and Reagents; D013058:Mass Spectrometry; D008694:Methamphetamine / Q000032:analysis* / Q000493:pharmacokinetics; D011786:Quality Control
D000447:Aldehydes; D001894:Borohydrides; D007202:Indicators and Reagents; D008694:Methamphetamine; C025364:sodium borohydride; C005556:propionaldehyde; D000661:Amphetamine