Journal
CLINICAL BIOCHEMISTRY
Volume 38, Issue 4, Pages 351-361Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.clinbiochem.2005.01.007
Keywords
LC/MS; fatty acids; organic acids; bile acids; eicosanoids; therapeutic agents; chemical derivatization
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Objectives: This review summarizes the current role of LC/MS in the diagnosis and screening of clinical conditions involving the analysis of biologically important carboxylic acids. Design and methods: Carboxylic acids are divided into six logical categories of acid size and function. Details of chromatographic separation methods and modes of mass spectrometer operation are described for each category. Results: The use of LUMS in clinical applications such as the diagnosis of inherited and acquired metabolic disorders, gastrointestinal disorders, cancer and diabetes and therapeutic drug monitoring is discussed. Conclusions: The mild conditions, speed and sensitivity advantages of LC/MS analysis, over alternatives, are highlighted. The sensitivity and specificity afforded by the combination of tertiary and quaternary ammonium derivatives and tandem mass spectrometry for the analysis of carboxylic acids is emphasized. Potential for a greater range of LUMS carboxylic analyses, including stereoisorneric intermediates, is predicted. (c) 2005 The Canadian Society of Clinical Chemists. All rights reserved.
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