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Also known as: Trypsin-like Immunoreactivity; Serum Trypsinogen; IRT
Formal name: Immunoreactive Trypsinogen

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

Sample Required?

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?