A nurse is providing teaching about phenylketonuria (PKU) testing to the parent of a newborn. Which of the following statements by the parent indicates a need for additional teaching?

“My baby will be placed under special lights if the test result is positive.”

“This test checks for a genetic disorder that can be managed by diet.”

“Sometimes the test is repeated in the doctor’s office at the baby’s 2-week check-up.”

“My baby needs to be on formula or breast milk before the test can be done.”