Proteinase 3 (PR3) Antibodies, Serum



Used for the diagnosis and monitoring of inflammatory activity in primary systemic small vessel vasculitides. The presence of anti-PR3 antibodies is highly specific for Wegener granulomatous (WG) disease, for which the sensitivity is reported to be 98%. Some patients with WG have P-ANCA with MPO specificity. Levels of anti-PR3 or anti-MPO are elevated during the active phases of the disease and lower during remission and can be monitored for management of the disease. See Also Neutrophil Cytoplasmic Antibodies (ANCA), Serum

Sample Type, Quantity & Conditions

1 ml Serum Stability: 14 Days at 2-8 °C

Special Precautions

Normal Range


Open chat
Scan the code
Hello 👋
Can we help you?