Table 1.
Laboratory test results during hospitalization of our patient
| Laboratory test | Pre-MAS | MAS | Normal range |
| White blood cells, × 109/L | 21.5 | 13.1 | 4.0-10.0 |
| Neutrophils, % | 95.1 | 83.1 | 50.0-70.0 |
| Hemoglobin, g/L | 100 | 67 | 113-151 |
| Platelets, × 109/L | 190 | 78 | 101-320 |
| Ferritin, ng/mL | NA | 40000 | 7.0-323 |
| Fibrinogen, g/L | 5.1 | 0.9 | 2.0-4.0 |
| Triglycerides, mmol/L | 1.18 | 5.68 | 0.3-1.70 |
| Cholesterol, mmol/L | 3.00 | 8.48 | 5.20-6.20 |
| ALT, U/L | 22 | 299 | 5-35 |
| AST, U/L | 59 | 280 | 8-40 |
| Lactate dehydrogenase, U/L | 715 | 1792 | 109-245 |
| ESR, mm/h | 97 | 33 | 0-20 |
| C-reactive protein, mg/L | 248 | 7.2 | 0-8.0 |
| Sodium, mmol/L | 137 | 143 | 135-145 |
ALT: Alanine aminotransferase; AST: Aspartate aminotransferase; ESR: Erythrocyte sedimentation rate; MAS: Macrophage activation syndrome; NA: Not available.