Abstract
A capillary electrophoretic (CE) method for the determination of hypoxanthine and xanthine in urine was developed to diagnose xanthinuria. The linearity was excellent up to 200 μmol l −1 for the two compounds and the limit of quantitation was 2 μmol 1 −1. A comparison o the results obtained using CE was made with those obtained by the high-performance liquid chromatographic (HPLC) technique described previously. With regard to specificity, sensitivity and reproducibility, the results are similar but CE is more rapid than HPLC.
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