ANCA (Anti-Neutrophil Cytoplasmic Antibodies)

This test is done to detect ANCA, a group of autoantibodies that target components of neutrophils. Their presence is strongly associated with autoimmune vasculitis, conditions that cause inflammation of small blood vessels. It helps support diagnosis of diseases such as granulomatosis with polyangiitis and microscopic polyangiitis, and may assist in disease monitoring.