Question 2

Newborns are required to be tested for Phenylketonuria.

All states in the U.S. mandate testing for Phenylketonuria (PKU) in newborns to ensure early identification and management of this metabolic disorder, which can lead to severe intellectual disability if left untreated.

A) Septicemia

Septicemia, which refers to the presence of bacteria in the bloodstream, is not a specific disorder that all newborns are routinely tested for. While it is a serious condition, testing for septicemia is usually conducted based on clinical suspicion rather than as a universal screening test.

B) Bacteremia

Bacteremia, similar to septicemia, involves bacteria in the bloodstream and is not included in the standard newborn screening panel across states. Routine testing for this condition occurs only when there are specific clinical indications, rather than as a universal requirement for all newborns.

C) Phenylketonuria

Phenylketonuria (PKU) is a genetic disorder that affects the body's ability to metabolize phenylalanine, and all states require newborn testing for this condition. Early detection through mandatory screening allows for dietary interventions that can prevent intellectual disabilities and other serious health issues.

D) Proteinuria

Proteinuria, the presence of excess protein in urine, is not a standard test performed on all newborns. This condition is generally investigated when there are specific health concerns or symptoms rather than being part of routine newborn screening protocols.

Conclusion

Phenylketonuria is the only option among those listed that is universally mandated for newborn screening across all states in the U.S. The other options, while they represent serious health conditions, are not included in the routine testing requirements for infants. Early detection of PKU is crucial for effective management and prevention of long-term developmental issues.