Final answer:
The mandated testing for all infants born in the US includes PKU (Phenylketonuria) screening, which is performed to detect an inherited disorder called Phenylketonuria.
Step-by-step explanation:
The mandated testing for all infants born in the US includes PKU (Phenylketonuria) screening.
This screening is performed to detect whether the infants have an inherited disorder called Phenylketonuria. It is done by testing a blood sample.
Phenylketonuria is a metabolic disorder in which the body can't break down an amino acid called phenylalanine. Without treatment, phenylalanine can build up to harmful levels in the blood and cause intellectual disability and other health problems.