Congenital Hypothyroidism Screening with Umbilical Cord Blood: Retrospective Analysis.

Incidence of congenital hypothyroidism varies across countries and different geographic regions. A retrospective analysis of cord blood thyroid stimulating hormone values, and their subsequent follow-up, was done in a tertiary-care center in Kerala, India. Congenital hypothyroidism was found at the rate of 1 in 244, which is higher than reported incidence from other centers.