Chromatographic methods for the analysis of basic neurotransmitters and their acidic metabolites

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Abstract
Chromatographic techniques for the determination of trace amounts of neurotransmitters were reviewed. The two techniques found to be most useful were GC‐MS and the reversed‐phase mode of HPLC with an electrochemical or fluorescent detector. For structure determination or unequivocal peak identification, GC‐MS is the method of choice. In addition the limits of detection of GC‐MS were better than those obtained by HPLC. However for routine analyses, HPLC is now being used in studies of mental illness and other diseases. Good resolution, reproducibility and sensitivity can be obtained without the derivatisation steps required for GC‐MS, and catecholamines, serotonin, and their acidic metabolites can be concomitantly determined in one analysis.