Table 1 Laboratory data on admission

 WBC

12100/μl

Anti-nuclear antibodies

Negative

 RBC

515 × 10⁴/μl

Rheumatoid factor

Negative

 Hb

14.8 g/dl

IgG

323 mg/dl

 Ht

42.9%

IgA

179 mg/dl

 Plt

43.3 × 10⁴/μl

IgM

259 mg/dl

Blood chemistry

C3

80.5 mg/dl

 TP

4.8 g/dl

C4

14.6 mg/dl

 Alb

2.8 g/dl

CH50

35.0 U/ml

 AST

11 IU/ml

C1q

Negative

 ALT

14 IU/ml

HBs antigen

Negative

 LDH

240 IU/ml

Anti-HCV antibody

Negative

 BUN

12.1 mg/dl

Urinalysis

 Cr

1.01 mg/dl

Gravity

1.013

 eGFR

45 ml/min/1.73 m²

pH

6.5

 Na

140 mEq/l

Protein

4+

 K

3.6 mEq/l

Occult blood

-

 Cl

105 mEq/l

Sediments

 LDL

123 mg/dl

RBC

<1/HPF

 TG

157 mg/dl

 HbA1c

5.2%

Urinary chemistry

 CRP

0.01 mg/dl

Protein

7.67 g/gCr