Why is the heel prick test duration important?
Delayed neonatal metabolic screening may result in irreversible harm. Disorders like congenital hypothyroidism or phenylketonuria require immediate intervention. The heel prick test, done within 48–72 hours, enables early detection and treatment—minimising the risk of developmental delays, organ damage, or mortality. Adhering to test timing is a critical component of newborn preventative care.