ENA ANTIBODIES (anti-RNP/anti-Sm)
1 SST/1.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate.
Room Temp 8 hours;Refrigerated 48 hours;Frozen 14 days
2 days Performed Mon, Wed, Thurs, Fri
Detect antibodies associated with SLE and mixed connective tissue disease. Anti-Sm is highly specific for SLE. Anti-RNP is found with a variety of rheumatoid diseases with high titers associated mainly with MCTD.