At a Glance
Why Get Tested?
To detect cystic fibrosis (CF) by evaluating pancreatic function
When to Get Tested?
As part of a newborn screening test; when a newborn has meconium ileus; sometimes when someone has symptoms of pancreatic insufficiency such as persistent diarrhea, foul-smelling bulky greasy stools, malnutrition, and vitamin deficiency
A blood sample drawn from an infant's heel, a spot of blood that is put onto filter paper, or a blood sample drawn from a vein in the arm
Test Preparation Needed?