Table 1. Diagnostic workup lab values.
ESR: erythrocyte sedimentation rate; ANCA: antineutrophil cytoplasmic antibody; RF: rheumatoid factor; SPEP: serum protein electrophoresis; CBC: complete blood count; UA: urine analysis; ANA: antinuclear antibody.
| Lab | Values |
| C3 | 136 (86-166 mg/dL) |
| C4 | 17 (13-46 mg/dL) |
| UA | Unremarkable |
| ESR | 12 (0-15 mm/h) |
| Hepatitis panel | Negative |
| ANCA | Negative |
| RF | 11 IU/mL |
| SPEP | Unremarkable |
| Immunofixation | No M protein |
| CBC | Unremarkable |
| Cryoglobulin | 19 ug/mL |
| ANA | Negative |