Table 1.

Laboratory data at admission

Peripheral blood		Serological test
White blood cell	6570/μL	Immunoglobulin G	1022 mg/dL
Red blood cell count	428 × 104/μL	Immunoglobulin A	242 mg/dL
Hemoglobin	12.6 g/dL	Immunoglobulin M	76 mg/dL
Hematocrit	38.8%	Complement activity	69 U/mL
Platelets	32.9 × 104/μL	C3 component	105 mg/dL
Blood chemistry		C4 component	20 mg/dL
Total protein	6.5 g/dL	Antinuclear antibody	80
Albumin	3.6 g/dL	Anti-ds-DNA	0.8 IU/mL
Aspartate aminotransferase	38 IU/L	Anti-ss-DNA	1.5AU/mL
Alanine aminotransferase	42 IU/L	Rheumatoid factor	60 U/mL
Lactate dehydrogenase	283 IU/L	Anti-CCP antibody	1.1 U/mL
Total cholesterol	235 mg/dL	Anti-RNP antibody	0.3 U/mL
LDL cholesterol	141 mg/dL	Anti-Scl-70 antibody	7.0 U/mL
Triglycerides	104 mg/dL	Anti-Sm antibody	0.3 U/mL
Uric acid	4.5 mg/dL	Anti-SS-A/Ro antibody	0.2 U/mL
Urea nitrogen	7.8 mg/dL	Anti-SS-B/La antibody	0.2 U/mL
Creatinine	0.77 mg/dL	Anti-centromere antibody	1.3 U/mL
eGFR	57 mL/min/1.73 m2	MPO-ANCA	0.1 U/mL
Sodium	145 mEq/L	PR3-ANCA	0.1 U/mL
Potassium	4.2 mEq/L	Hepatitis B virus, surface antigen	(–)
Chloride	106 mEq/L	Hepatitis C virus antibody	(–)
C-reactive protein	0.28 mg/dL	Urinalysis
SAA	54.1 μg/mL	Gravity	1.005
		pH	6.5
		Protein	2+
			2.8 g/gCr
		Occult blood	(–)
		Glucose	(–)
		Ketone	(–)
		NAG	4.5 U/L
		β2MG	294 μg/L