The ANCA looks at antibodies in some vasculitis. It is done for: unexplained kidney, lung or sinus inflammation.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Unexplained kidney, lung or sinus inflammation.
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Vasculitis possible. Low or negative may mean: Not detected. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Antibodies in some vasculitis.
Blood
Vasculitis possible.
Not detected.
Reference ranges vary by lab, age and sex — always use the range printed on your own report.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does the ANCA measure?
Antibodies in some vasculitis.
Why is the ANCA done?
Unexplained kidney, lung or sinus inflammation.
Do I need to fast for the ANCA?
No fasting needed.
What does a high or positive ANCA mean?
Vasculitis possible.
What does a low or negative ANCA mean?
Not detected.
What is the normal range for the ANCA?
Laboratory-specific; see the reference range on your report.
Why is ANCA done?
Unexplained kidney, lung or sinus inflammation.
Do I need to prepare or fast for ANCA?
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Vasculitis possible. Low or negative may mean: Not detected. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references