Automated Measurement of Urinary Iodine

Abstract

Abstract We describe a simplified, automated method for screening urinary iodine. Digestion with strong acid is avoided by dialyzing urine and then directly analyzing iodine in the dialysate with the ceric ion—arsenious acid system. This method is particularly useful for analyzing large numbers of samples without loss in precision. Urinary iodine excretions are reported for 1224 children 1 to 6 years of age.