1210 Extractable Nuclear Antigen (ENA) IgG Autoantibodies

Components
NAME METHOD REFERENCE RANGE UNITS
nRNP/Sm IgG Autoantibodies EIA/LIA  < 5.0  Units 
Sm (Smith) IgG Autoantibodies EIA/LIA  view ref range  Units 


Specimen Requirements
TYPE VOLUME TEMPERATURE INSTRUCTIONS
PRIMARY
1 Serum 1 (0.5) mL   Ambient - 7 Day(s), Refrigerated - 14 Day(s), Frozen - 2 Month(s)  


Clinical utility
Detect antibodies associated with SLE and mixed connective tissue disease. Anti-Sm is highly specific for SLE. Anti-RNP is found with a variety of rheumatoid diseases with high titers associated mainly with MCTD.


Reported: Same day

CPT Code: 86235x2