ANA (antinuclear antibody) is seen in all except:: (A) SLE, (B) RA, (C) Sjogren's syndrome, (D) Systemic sclerosis
Answer is B. Ans. (b) RA(Ref: Harrison 18th/chapter 321, 323)Antibodies seen in RA are rheumatoid factors (RFs) and anti-cyclic citrullinated peptides (CCP) antibodies ANA is seen in:Almost all (>95%) cases of SLEIn virtually all patients with SSc (Systemic sclerosis)50% to 80% cases of Sjogren syndrome