Figure 2From: A simple cost-effective high performance liquid chromatographic assay of sulphadoxine in whole blood spotted on filter paper for field studies(A) separation of sulphadoxine (1) and internal standard (2) from whole blood spiked with 60 μg/ml sulphadoxine. (B) and (C) chromatograms of day 0 and day 3 whole blood samples collected from a patient who received a standard single dose of sulphadoxine-pyrimethamine (25 mg/kg body weight of sulphadoxine component and 1.25 mg/kg body weight of pyrimethamine component).Back to article page