Chapter title |
Quantitation of Carisoprodol and Meprobamate in Urine and Plasma Using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
|
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Chapter number | 12 |
Book title |
Clinical Applications of Mass Spectrometry in Drug Analysis
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Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-3252-8_12 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3251-1, 978-1-4939-3252-8
|
Authors |
Matthew H. Slawson, Kamisha L. Johnson-Davis |
Abstract |
Carisoprodol and meprobamate are centrally acting muscle relaxant/anxiolytic drugs that can exist in a parent-metabolite relationship (carisoprodol → meprobamate) or as a separate pharmaceutical preparation (meprobamate aka Equanil, others). The monitoring of the use of these drugs has both clinical and forensic applications in pain management applications and in overdose situations. LC-MS/MS is used to analyze urine or plasma/serum extracts with deuterated analogs of each analyte as internal standards to ensure accurate quantitation and control for any potential matrix effects. Positive ion electrospray is used to introduce the analytes into the mass spectrometer. Selected reaction monitoring of two product ions for each analyte allows for the calculation of ion ratios which ensures correct identification of each analyte, while a matrix-matched calibration curve is used for quantitation. |
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