Table 1.
Blood Tests on Presentation.
| Test | Patient | Reference ranges |
|---|---|---|
| Hemoglobin (g/L) | 128 | 135-180 |
| White cell count (×109/L) | 6.2 | 4.0-11.0 |
| Platelets (×109/L) | 220 | 150-400 |
| Mean corpuscular volume (fL) | 86 | 80-96 |
| Creatinine kinase (U/L) | 9664 | 20-200 |
| Erythrocyte sedimentation rate (mm/h) | 41 | 1-20 |
| C-reactive protein (mg/L) | 25.9 | <6.0 |
| Lactate dehydrogenase (U/L) | 795 | 120-250 |
| Serum protein electrophoresis | No monoclonal band | |
| Alanine aminotransferase (U/L) | 168 | <40 |
| Antinuclear antibodies | Not detected | |
| Myositis-specific antibodies | Not detected |