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What is A young girl is admitted with joint pains and butterfly rash and positive urine proteinuria. The best test for her diagnosis is ? and explain in detail?
Ans. is 'a' i.e., Anti ds-DNA antibody o Association of antibodies with disease activity.# Anti ds-DNA antibody is-increased risk oj nephritis in cases oj SLE.# Anti centromere ab is-limited scleroderma.# Antibodies to RNP is-CNS lupus.# Antibodies to tRNA synthetase-polymyositis with interstitial lung disease.