Table 1 Laboratory findings on admission

White blood cell (× 10³/μL)

11.13

6.00 – 10.80

Neutrophils (× 10³/μL)

4.69

1.50 – 8.50

Lymphocytes (× 10³/μL)

5.11

2.00 – 8.00

Hemoglobin (g/dL)

12.6

10.5 – 13.5

Platelet (× 10³/μL)

296

150—450

Creatinine (mg/dL)

0.34

0.26 – 0.55

Aspartate aminotransferase (U/L)

5.01

4.33 – 7.21

Alanine aminotransferase (U/L)

44

23—46

ESR (mm/hr)

40

2—20

CRP (mg/dL)

5.1

 < 5.0

IgG (mg/dL)

1364

300—1070

IgM (mg/dL)

243

50—170

IgA (mg/dL)

115

 < 90

NSE (mcg/L)

56.7

 < 18.0

RF (U/mL)

574

 < 20

C3 (mg/dL)

144

85—142

C4 (mg/dL)

55

12—41

ANA

1:640 (positive)

Anti-CCP (U/mL)

 > 340.0

Positive > 10

ANCA

negative

ENA

negative

Interferon signature score

Positive (24)

 <  = 2.2