Understand Your Test

ANCA/MPO/PR3 Antibodies

Formal Name

 Antineutrophil Cytoplasmic Antibodies

Why Get Tested?

To help detect, aid in the diagnosis of, and sometimes monitor certain forms of the autoimmune disorder systemic vasculitis(inflammation of blood vessels)

To help distinguish between Crohn disease (CD) and ulcerative colitis (UC), the two most common types of inflammatory bowel disease (IBD); as an adjunct to other IBD testing.

When To Get Tested?

When you have symptoms such as fever, muscle aches, and weight loss that your health practitioner thinks may be due to a vascular autoimmune disorder; sometimes to monitor response to therapy

When you have symptoms such as persistent or intermittent diarrhea and abdominal pain that your health practitioner suspects may be due to an IBD; when your health practitioner wants to distinguish between CD and UC.