Description
Detects antibodies to cytosolic 5′-nucleotidase 1A (cN1A/NT5C1A), also called Mup44.
Indications
Supports evaluation of inclusion body myositis when interpreted with weakness pattern, CK, EMG, imaging, and/or biopsy. Positivity is not fully specific.
Sample Type, Quantity & Conditions
Serum
Special Precautions
Serum; avoid hemolysis/lipemia. Include neuromuscular phenotype and relevant cancer/autoimmune history.
Normal Range
< 1.0 Ratio