Published in Telemedicine Business Week, May 20th, 2009
"We aimed to develop a high-throughput on-line solid-phase extraction-liquid chromatographic-tandem mass spectrometric (XLC-MS/MS) method that enables the measurement of tryptophan and its metabolites kynurenine and 3-hydroxykynurenine in plasma. Fifty microliters plasma equivalent was pre-purified by automated on-line solid-phase extraction,...
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