Clinical indications to test for antineutrophil cytoplasmic antibody
| Glomerulonephritis |
| Pulmonary hemorrhage (especially with pulmonary-renal syndrome) |
| Multiple lung nodules |
| Mononeuritis multiplex or unexplained peripheral neuropathy |
| Cutaneous vasculitis, especially with systemic features |
| Scleritis |
| Retroorbital mass |
| Chronic destructive disease of the upper airways |
| Chronic sinusitis or otitis |
| Subglottic tracheal stenosis |