Test ID: Z4699
CPT code: 86235
LOINC: 79182-2
Specimen Type: Red or SST
Frequency: 14 – 21 days
Instructions: 1 mL Serum from Red or SST, Refrigerated, Separate within 1 hour. Min 0.3 mL.
Text: The detection of anti-RNAP III antibodies is useful in the diagnosis of SSc and for the identification of patients at risk for developing progressive skin thickening and renal crisis. The prevalence of IgG RNAP III antibodies is from 3 – 58% in SSc patients.
Methodology: Enzyme immunoassay (EIA)