Medicine – MCQ 32 – C- ANCA positivity
C- ANCA positivity indicates antibody formed against
A. Proteinase 3
B. Myeloperoxidase
C. Cytoplasmic antinuclear Antibody
D. Anti centromeric Antibody
Correct answer : A. Proteinase 3
Proteinase 3 is the major C ANCA antigen.