se (MCTD). (Chromatin) Associated with drug induced LE. 25-85% 15-301 35-60% 15% 44-6(ed 34-40% 28-25% 88% High Correlation 90.100% . ref:Krranaugh,A(et al.):Guldelines for Clinical Use of the Antinuclear Antibody Test and Tests for Specific Autoantibodies to Nuclear Antigens. Arch.Pathol Lab Me