Table 1.

Laboratory parameters at the time of biopsy

Laboratory parameter	Value	Reference range
Serum creatinine, mg/dl	1.24	0.6–1.2
BUN, mg/dl	12	11–23
Proteinuria, mg/24 h	5717	10–150
Hematuria, urinalysis	Moderate, 2+	Negative
C3, mg/dl	65	90–170
C4, mg/dl	<8	19–52
Serum albumin, g/dl	2.9	3.2–4.8
ESR, mm/h	63	0–26
CRP, mg/l	4	0–0.5
Ferritin, ng/ml	450	22–322
ANA,	Positive, >1:640	<1:40
Anti-dsDNA, IU/ml	Positive, 727	<30
RF, IU/ml	Positive, 18	0–14
Anti-Smith, U	Positive, 1.1	<1.1
Anti-histone, U	Positive, 9.4	0–0.9
Anti-SSA/Ro, AI	Negative, <0.2	0–0.9
Anti-SSB/La, AI	Negative, <0.2	0–0.9
Anti-cardiolipin, U/ml	Negative, <9	0–12
ANCA, U	Negative, <0.2	<0.4
White blood cells, 1000/μl	5	4.5–11
Hemoglobin, g/dl	10.7	14–18
Platelets, 1000/μl	270	150–400
HIV	Negative	Negative
Hepatitis panel	Negative	Negative

ANA, antinuclear antibody; ANCA, antineutrophil cytoplasmic antibody; BUN, blood urea nitrogen; CRP, C-reactive protein; dsDNA, double-stranded DNA; ESR, erythrocyte sedimentation rate; RF, rheumatoid factor; SSA, Sjögren syndrome–related antigen A; SSB, Sjögren syndrome–related antigen B.