antineutrophil cytoplasmic antibody test

antineutrophil cytoplasmic antibody (ANCA) test

a blood test used to diagnose Wegener's granulomatosis. It is also used to follow the course of the disease, monitor its response to therapy, and detect early relapse.
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Order a urine culture, serum BUN and creatinine measures, a renal ultrasound, and "some serology" such as antinuclear antibody, C3, Streptozyme, or antineutrophil cytoplasmic antibody tests, he said.
Further workup yielded negative results for antinuclear antibody, rheumatoid factor, and antineutrophil cytoplasmic antibody tests.