Table 1. Serologic workup of the patient .

ANA: antinuclear antibody; CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; RNP: ribonucleoprotein

Test	Result	Reference range
ANA screen	<80	<80 titer
Anti-Smith antibody	<0.2	<1 AI
Anti-RNP antibody	<0.4	<1 AI
Anti-SSA	<0.2	<1 AI
Anti-SSB	<0.2	<1 AI
Rheumatoid factor screen	13	<25 IU/mL
Cold agglutinins	<1:32	<1:32
Centromere antibody	<0.2	<1 AI
Myeloperoxidase antibody	<0.2	<1 AI
Serine protease 3 antibody	<0.2	<1 AI
Complement C3	101	88-200 mg/dL
Complement C4	<8.0	10-49 mg/dL
Jo 1 antibody	<0.2	<1 AI
SCL70 antibody	<0.2	<1 AI
Beta-2 glycoprotein 1 AB IgG	<1.4	<20 U/mL
Beta-2 glycoprotein 1 AB IgM	0.2	<20 U/mL
Anti-CCP IgG	<0.5	<3 U/mL
Cardiolipin IgG	<1.6	<20 GPL/mL
Cardiolipin IgM	<0.2	<20 MPL/mL
Dilute Russell's viper venom	1.1	<1.3 ratio
Hexagonal lupus anticoagulant	3s	Negative
IgG	536	762-1488 mg/dL
IgM	884	38-328 mg/dL
IgA	45	70-390 mg/dL
ESR	79	0-22 mm/hr
CRP	2.8	<1.0 mg/dL
Serum viscosity	1.2	≤1.5 cPoise
Cryoglobulins	4%	Negative
Immunofixation cryoglobulin	Type I (monoclonal IgM kappa)	Negative