The TSH Ultrasensitive, Cord Blood test is a neonatal screening test performed using blood collected from the umbilical cord at birth. It measures very low levels of thyroid-stimulating hormone (TSH) using highly sensitive methods.

This test is primarily used to detect congenital hypothyroidism, a condition where the newborn’s thyroid gland does not produce enough hormones. Early detection is critical, as untreated thyroid deficiency can affect growth and brain development.

The test uses advanced ultrasensitive techniques to measure TSH levels in cord blood. Elevated TSH levels may indicate an underactive thyroid gland, prompting further evaluation and early treatment if necessary.