ENA (extractable nuclear antigen)
see also:
pathology
introduction
ENA is a blood test looking for extractable nuclear antigens which are >100 different soluble cytoplasmic and nuclear antigens.
autoantibodies to these antigens are associated with particular
connective tissue (CT) disorders
:
anti-Sm (for
systemic lupus erythematosus (SLE)
)
anti-RNP (for
MCTD
)
anti-La (for
Sjögren's syndrome (SS)
)
anti-Ro (for
Sjögren's syndrome (SS)
)
anti-Scl70 (for
scleroderma
)
anti-Jo (for
dermatomyositis
)