Identify One or More Choices That Best Complete the Statement

Identify one or more choices that best complete the statement or answer the question.
-The pediatric nurse conducts a blood sampling for PKU, which is a standard policy in most states of the United States. The parents want to void a heel stick for the blood screening and ask why the test is so important. Which answers will the nurse provide? Select all that apply.

A) PKU stands for a genetic mutation of a single base pair of chromosomes.
B) PKU results in an accumulation of phenylketonuria in the kidneys.
C) PKU is a required newborn screening for metabolic disorders.
D) Phenylalanine is an essential protein present in many foods.
E) Once PKU is diagnosed, the child's diet can resume to normal.