Phenylketonuria (PKU) is a hereditary disease that is caused by the lack of a liver enzyme required to digest phenylalanine. Phenylalanine is an amino acid that is most commonly found in protein-containing foods such as meat, cow’s milk, over the counter infant formulas (both regular and soy) and breast milk.

Astoria-Pacific’s SPOTCHECK Phenylalanine test automates the measure of phenylalanine in the newborn blood.