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

(−)