Anti-ENA Abs (Anti-SM & Anti-RNP)

Test Code: 914
CPT Codes: 86235 X 2
Methodology: EIA
Specimen Requirements: 1 mL serum, ambient, refrigerated or frozen
Turn Around Time: 1 – 3 Days
Special Instructions: None
Clinical Utilities: Aids in the diagnosis of Systemic Lupus Erythematosus (SLE), and related connective tissue diseases such as Sjogren’s Syndrome.  Anti-Sm is highly specific for SLE.  Anti-RNP is found with a variety of rheumatoid diseases with high titers associated mainly with MCTD.