Abstract
Eight euthyroid subjects were administered 500μg of thyrotropin-releasing hormone intravenously before and after the administration of 10mg potassium iodide daily for 7 days. Basal serum concentrations of TSH and the response of TSH to TRH were significantly increased following iodide treatment, while serum levels of T4 and T3 did not differ significantly. It is suggested that the administration of 10mg/day of potassium iodide can produce similar changes in serum TSH to those in previous reports using large doses of iodide
