In PKU management, which laboratory values should be monitored?

In PKU management, which laboratory values should be monitored?

• A. Serum potassium
• B. Serum phenylalanine levels
• C. Blood glucose
• D. Serum calcium

Answer: (B)

Monitoring serum phenylalanine levels is essential in PKU management because the disorder causes phenylalanine to accumulate, which can harm brain development if levels stay high. Regular measurement lets you tailor the phenylalanine content of the diet to keep blood levels within a safe range for the patient’s age, helping protect neurodevelopment and cognitive outcomes. The testing frequency is higher in infancy and early childhood when growth and dietary needs change, and it can become less frequent as control stabilizes. Other values like potassium, blood glucose, or calcium aren’t used to gauge PKU management, though they may be checked for other health reasons.

Monitoring serum phenylalanine levels is essential in PKU management because the disorder causes phenylalanine to accumulate, which can harm brain development if levels stay high. Regular measurement lets you tailor the phenylalanine content of the diet to keep blood levels within a safe range for the patient’s age, helping protect neurodevelopment and cognitive outcomes. The testing frequency is higher in infancy and early childhood when growth and dietary needs change, and it can become less frequent as control stabilizes. Other values like potassium, blood glucose, or calcium aren’t used to gauge PKU management, though they may be checked for other health reasons.