ENA 4
ENA 4 is a grouping of antibodies often used to screen for mixed connective tissue disease (MCTD), Sjögren's syndrome and systemic lupus erythematosus and commonly is composed of four tests:
- anti-Sm (for SLE)
- anti-RNP (for MCTD)
- anti-La (for Sjögren's)
- anti-Ro (for Sjögren's)
Read more about this topic: Extractable Nuclear Antigens