Phenylketonuria medical terminology definition

Also called: PKU
Phenylketonuria (PKU) is a genetic disorder in which the body can’t process part of a protein called phenylalanine (Phe). Phe is in almost all foods. If the Phe level gets too high, it can damage the brain and cause severe mental retardation. All babies born in U.S. hospitals must now have a screening test for PKU. This makes it easier to diagnose and treat the problem early.