Summary of laboratory tests for microscopic polyangiitis in children.
| Patient | p-ANCA/c-ANCA/MPO/PR3 | ANA/dsDNA | C3 (0.77–1.95 g/l) | ESR (≤ 20 mm/h) | CRP (≤ 3 mg/l) |
|---|---|---|---|---|---|
| 1 | +/−/ND/ND | +/− | 2.25 | 128 | 2.21 |
| 2 | +/−/+/− | −/− | 1.04 | 27 | 4.8 |
| 3 | +/−/+/− | −/− | 1.43 | 44 | 5.8 |
| 4 | +/−/+/− | +/+ | 0.94 | 28 | 1.0 |
| 5 | +/−/+/− | +/+ | 1.35 | 33 | 8.32 |
| 6 | +/−/+/− | +/+ | 0.9 | 41 | ND |
| 7 | −/+/−/+ | −/− | 0.73 | 19 | 32.5 |
| 8 | +/−/+/+ | +/+ | 1.0 | 46 | 1.79 |
| 9 | +/−/+/− | −/− | 0.86 | 45 | 2.22 |
| 10 | +/−/+/− | +/+ | 0.91 | 15 | < 1 |
| 11 | +/−/+/− | +/− | 0.9 | 76 | 2.7 |
| 12 | +/−/+/− | +/+ | 1.1 | 36 | 2.53 |
| 13 | +/−/+/− | −/− | 0.25 | 8 | < 1 |
| 14 | −/+/+/− | −/− | 0.69 | ND | 0.73 |
| 15 | +/−/ND/ND | −/− | 1.26 | 105 | ND |
| 16 | +/−/ND/ND | ND | 1.42 | 108 | 10.9 |
| 17 | +/−/+/− | +/− | 1.23 | 90 | 43.3 |
| 18 | +/−/+/− | +/+ | 0.9 | 40 | 4.29 |
| 19 | +/−/+/− | +/+ | 0.81 | 53 | < 1 |
| 20 | +/−/+/− | +/− | 0.63 | 24 | 2.3 |
ANA: antinuclear antibody; CRP: C-reactive protein; C3: complement 3; ESR: erythrocyte sedimentation rate; ND: not detected; +: positive; –: negative; MPO: myeloperoxidase; p-/c-ANCA: perinuclear/cytoplasmic antineutrophil cytoplasmic antibodies.