PKU is a rare genetic disease that manifests at birth and is marked by an inability to break down phenylalanine, an amino acid that is commonly found in many foods. Left untreated, high levels of ...

A rare disease in the US is one in 1,500, or fewer than 200,000 people, and an ultra-rare disease is one in 50,000 or fewer than than 6,000 people.

PKU is a rare genetic disease that manifests at birth and is marked by an inability to break down phenylalanine (phe), an amino acid that is commonly found in many foods. Left untreated ...

Drops of blood, filter paper, bacteria, a bacterial inhibitor, and a baking dish—that’s all it took for microbiologist Robert Guthrie to develop a basic test for phenylketonuria, a genetic metabolic ...