Table 1.
Laboratory findings on admission
| Peripheral blood | Serological tests | ||
| White blood cells | 19,000/μL | C-reactive protein | 19.85 mg/dL |
| Neutriphil | 90.0% | ESR (1 h) | 41 mm |
| Lymphocyte | 4.0% | sIL-2R | 1340 U/mL |
| Monocyte | 4.0% | IgG | 1752 mg/dL |
| Eosinophil | 1.0% | IgA | 235 mg/dL |
| Basophil | 1.0% | IgM | 374 mg/dL |
| Red blood cells | 4.61 × 106/μL | C3 | 95 mg/dL |
| Hemoglobin | 9.6 g/dL | C4 | 16 mg/dL |
| Hematocrit | 32.4% | Rheumatoid factor | 8.0 IU/mL |
| Platelet | 31.7 × 104/μL | ANA | < 80× |
| Blood chemistry | Anti-ds DNA Ab | 0.6 IU/mL | |
| Total protein | 8.2 g/dL | Anti-SSA Ab | < 0.5 U/mL |
| Albumin | 3.6 g/dL | SAA | 773 µg/mL (< 8.0) |
| Total bilirubin | 0.6 mg/dL | MMP-3 | 225 ng/mL (17.3–59.7) |
| Aspartate transaminase | 48 U/L | Procalcitonin | 3.89 ng/mL (< 0.05) |
| Alanine transaminase | 11 U/L | Urinalysis | |
| Lactate dehydrogenase | 797 U/L | Glucose | (−) |
| Alkaline phosphatase | 224 U/L | Protein | (1+) |
| γ-Glutamyltranspeptidase | 26 U/L | Neutrophils (sediment) | (3+) |
| Creatine kinase | 27 U/L | Infection | |
| Blood urea nitrogen | 12 mg/dL | HBs Ag | (−) |
| Creatinine | 1.23 mg/dL | HCV Ab | (−) |
| Sodium | 138 mEq/L | ASLO | 275 IU/mL (< 240) |
| Potassium | 3.8 mEq/L | Parvovirus B19 IgM | 0.39 index (< 0.79) |
| Chlorine | 99 mEq/L | CMV antigenemia | (−) |
| Ferritin | 1719 ng/mL | Blood culture | (−) |
ESR erythrocyte sedimentation rate, sIL-2R soluble interleukin-2 receptor, Ig immunoglobulin, ANA anti-nuclearantibody, Anti-ds-DNA Ab anti-double stranded deoxyribonucleic acid antibody, SAA serum amyloid A, MMP-3 matrix metalloproteinase-3, HBs Ag hepatitis B virus surface antigen, HCV Ab anti-hepatitis C virus antibody, ASLO anti-streptolysin O, CMV cytomegalovirus