Perchlorate Test in Hyperthyroid Patients Treated with Radioactive Iodine

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Abstract
IN view of an early thyroid uptake (two hours) relatively higher than that of twenty-four hours in some of our patients treated with radioactive iodine we decided to use the perchlorate test, as a means of ascertaining the integrity of the enzymatic systems responsible for the organification of iodine in this class of patients.This study was carried out in 48 hyperthyroid patients treated with radioactive iodine (I131) who, when the perchlorate test was performed, could be classified on clinical and laboratory grounds as follows: Group A, 22 euthyroid patients treated five to thirty months previously; Group B, 5 . . .