Test ID: ANRNP
CPT code: 86235
LOINC:
Specimen Type: Gel clot tube
Frequency: Setup: Daily; TAT 24 hrs
Instructions: 2.0mL serum from Red Top. Ref for no longer than 48 hrs. Freeze is
testing is delayed. Avoid multiple freeze/thaw cycles.
Text: Aabs to the protein components of the U1 variety of small nuclear
ribonucleoproteins are common in SLE-overlap syndromes. High titers of
AB to U1 snRNP are a hallmark of mixed connective tissue disease.
Methodology: Microparticle multiplex immunoassay.