Deficient GAA Enzyme Activity
Markedly reduced or absent activity of acid alpha-glucosidase, confirming the inability to break down lysosomal glycogen.
Pompe Disease Screening, Pompe Disease Test
A few drops of blood are collected on filter paper and dried. The sample is then analyzed using fluorometric or mass spectrometry techniques to measure the activity of the GAA enzyme.
Markedly reduced or absent activity of acid alpha-glucosidase, confirming the inability to break down lysosomal glycogen.