Which of the following auto antibodies is most likely to be present in a patient with systemic lupus erythematosus?: (A) Anti- ds DNA, (B) Anti-RNP, (C) Anti-Ro, (D) Antiphospholipid
Answer is A. Subtypes of anti nuclear antibodies include anti-Smith and anti-double stranded DNA (dsDNA) antibodies (which are linked to SLE).