Thyroid function in infants born to women with hypothyroidism: An observational study at an Australian tertiary perinatal center

Infants born to women with hypothyroidism (including autoimmune hypothyroidism) had normal thyroid function in the early neonatal period. A small proportion of infants may develop TSH levels >10 mU/L that normalizes by four weeks of age. The practice of routine thyroid function testing for this cohort in addition to newborn screening test offers no additional benefit. This article is protected by copyright. All rights reserved.