IF Pattern | Antibody Test Result | Total | |||
---|---|---|---|---|---|
Negative | PR3 | MPO | MPO + PR3 | ||
Negative | 1949 (1866) | 29 (20) | 20 (18) | 0 | 1998 (1904) |
Atypical | 131 (119) | 0 | 16 (11) | 0 | 147 (130) |
C-ANCA | 37 (33) | 41 (19) | 3 (2) | 1 | 82 (54) |
P-ANCA | 40 (37) | 3 (2) | 74 (44) | 0 | 117 (83) |
P-ANCA + C-ANCA | 0 | 0 | 0 | 1 | 1 |
Total | 2157 (2055) | 73 (41) | 113 (75) | 2 (2) | 2345 |
ANCA: antineutrophil cytoplasmic antibodies; IF: immunofluorescence; PR3: proteinase 3; MPO: myeloperoxidase; C-ANCA: cytoplasmic ANCA; P-ANCA: perinuclear ANCA.