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NAME | METHOD | REFERENCE RANGE | UNITS |
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nRNP/Sm IgG Autoantibodies | EIA/LIA | view ref range | Units |
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TYPE | VOLUME | TEMPERATURE | INSTRUCTIONS |
PRIMARY | ||||
1 | Serum | 1 (0.5) mL | Ambient - 7 Day(s), Refrigerated - 14 Day(s), Frozen - 2 Month(s) |
Autoantibodies to the protein components of the U1 variety of small nuclear ribonucleoproteins (U1 snRNP) are common in SLE-overlap syndromes (e.g., mixed connective tissue disease [MCTD]) and less so in SLE itself. High titers of autoantibody to U1 snRNP are a hallmark of MCTD. |