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Test Directory

7419 nRNP/Sm IgG Autoantibodies

Specimen Type
Specimen Stability
Reference Range
Serum
14 Days, Refrigerated
7 Days, Ambient
2 Months, Frozen
< 11.00 Units

Specimen Requirements

Specimen Type: Serum
Container: 1 Serum Separator Tube (SST)
Temperature: Refrigerated
Preferred Vol: 1.00 mL
Min Vol: 0.50 mL

Method

Enzyme Immunoassay (EIA); Latex Immunoassay (LIA)

Schedule

Tuesday - Sunday

Turn-Around Time

Send-Out

Instructions/Notes

Clinical Utility

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.

CPT Codes

86235

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