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ANCA/MPO/PR3 Antibodies

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Also known as: ANCA Antibodies; cANCA; pANCA; Serine Protease 3; MPO; PR3; Anticytoplasmic Autoantibodies; 3-ANCA; PR3-ANCA; MPO-ANCA
Formal name: Antineutrophil Cytoplasmic Antibodies; Myeloperoxidase Antibodies; Proteinase 3 Antibodies

At a Glance

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

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

None