A hearing screening is a program used to detect hearing impairments in newborns, typically conducted between 72 hours and 42 days after birth.

The newborn phenylketonuria screening requires blood to be carefully examined through venipuncture.

What symptoms might a baby with Phenylketonuria exhibit, and how should parents respond when they receive a positive test notification?

Although the Down syndrome screening is high-risk, if amniocentesis is not performed and the newborn screening is normal, how should one further confirm the condition?