Table 1. Laboratory investigations obtained upon presentation.
| Parameter | Value |
|---|---|
| Complete blood count | |
| White blood count | 4 k/uL |
| Hemoglobin | 9.3 g/dL |
| Platelet count | 231 k/uL |
| Coagulation profile | |
| Prothrombin time | 14.4 sec |
| Partial thromboplastin time | 39.8 sec |
| Inflammatory markers | |
| C-reactive protein | 0.26 mg/dL |
| Erythrocyte sedimentation rate | 50 mm/hr |
| Immunoglobulins & complement | |
| Immunoglobulin A | 320 mg/dL |
| Immunoglobulin G | 1629 mg/dL |
| Immunoglobulin M | 139 mg/dL |
| Immunoglobulin E | 202 kU/L |
| Autoantibodies | |
| Antinuclear antibody | >1280 (Positive) |
| Anti-double stranded DNA | 1:40 (Positive) |
| Anti-Ro/SSA | 70.5 (Positive) |
| Anti-La/SSB | <3.3 (Negative) |
| Anti-ribonucleoprotein | <3.5 (Negative) |
| Anti-Scl-70 | <1.2 (Negative) |
| Anti-Smith antibody | <3.3 (Negative) |
| Complement | |
| C3 | 108 |
| C4 | 18.7 |