Swivel Direct FlowÂ® Ultrasonic Insert. The through-tip water delivery of Swivel Direct Flow focuses the water flow directly to the tip, reducing excess spray for improved visibility and enhanced patient comfort.
Phenylketonuria (PKU) is located in the q arm of chromosome 12. It is caused by a mutation of the (PAH) phenylalanine hydroxylase gene. The (PAH) gene produces the enzyme phenylalanine hydroxylase and it then converts the phenylalanine to tyrosine.enetic Testing. The phenylalanine tolerance test is one form of genetic testing for PKU. It is performed by giving a person a measured amount of phenylalanine and the concentration of phenylalanine in the blood plasma is measured.
Phenylketonuria is a rare disorder that affects males and females in equal numbers. The reported incidence of PKU from newborn screening programs ranges from one in 13,500 to 19,000 newborns in the United States. The incidence varies in other parts of the world. PKU affects people from most ethnic backgrounds, although it is rare in Americans of African descent and Jews of Ashkenazi ancestry.