Get answers to your child's growth, nutrition, and feeding behavior questions.
Phenylalanine - blood test
A normal test results means that phenylalanine levels are normal and the child is not affected by PKU.
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
PKU is a possibility and further testing will be performed if the phenylalanine levels in the infant's blood are too high.
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