The Hypothyroid Infant and Child<subtitle>Therapy with Sodium I-Thyroxine</subtitle>

Rates of I131-Labeled Thyroxine Metabolism in Euthyroid Children

“…Studies of the requirements for thyroid hormone by infants and children suggest that they may be relatively higher than those of adults (1)(2)(3). Although the plasma concentration of thyroid hormone in newborn infanits is appreciably higher than in adults, in children there appears to be no significant difference (4)(5)(6)(7)(8)(9).…”