Fig. 4From: Simultaneous and enantiospecific quantification of primaquine and carboxyprimaquine in human plasma using liquid chromatography-tandem mass spectrometryRetention time of racemic primaquine and carboxyprimaquine on the Hypersil Gold column (100 mm × 4.6 mm; I.D. 3 μm) at a flow rate of 0.5 mL/min, using an isocratic mobile phase (10 mM ammonium acetate pH 3.5:acetonitrile; 50:50, v/v)Back to article page