Neonatal TSH Test - Neonatal Thyroid Stimulating Hormone (TSH) Test

A screening test for congenital hypothyroidism (CH) is performed by measuring the level of thyroid-stimulating hormone (TSH) in blood taken from the newborn's heel. Elevated TSH levels are the primary and most sensitive indicator of primary hypothyroidism in infants, as the pituitary gland stimulates the underactive thyroid gland.