About This Test
The Anti-Proteinase 3 (PR3) antibody test detects IgG antibodies directed against proteinase-3, an enzyme found in neutrophil granules. These antibodies are a major subtype of ANCA (Anti-Neutrophil Cytoplasmic Antibodies). Anti-PR3 antibodies are strongly associated with Granulomatosis with Polyangiitis (GPA), formerly known as Wegener’s granulomatosis. PR3-ANCA corresponds to the “c-ANCA” pattern on IFA (immunofluorescence).
Test Parameters (1)
- ANTI PR3 ANTIBODIES,Serum
Home Collection
✓ Available
Reports Available In
1 Day
Frequently Asked Questions
A serology test is a laboratory blood test that detects and measures antibodies or antigens in the blood to determine whether a person has been exposed to, infected by, or developed immunity to a particular disease.
Fasting is not required.
Sample before 10am wed, report same day.
Anti-PR3 (Proteinase 3) antibodies are autoantibodies directed against a neutrophil enzyme. They are primarily associated with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), especially granulomatosis with polyangiitis (GPA, formerly Wegener’s granulomatosis). Detecting anti-PR3 antibodies is crucial for diagnosis, monitoring, and treatment planning in autoimmune vasculitis.
TAT Policy
The Turnaround Time (TAT) depends on the following factors:
- Registration date and time
- Type of scan or test
- Scan time or sample collection time
In uncommon circumstances, TAT may be delayed due to test complexity or reasons beyond our control. You will be informed of the estimated TAT at the time of registration.
