<prompt> The most specific antibody for Rheumatoid ahritis is?Antinuclear antibody ANARheumatoid factorAnti-cyclic citrullinated peptide anti-CCP antibodyAnti-double stranded DNA antibody  <response>: Anti-CCP is the most specific antibody for rheumatoid ahritis with specificity of 95. 20 patients have elevated ANA and ESR. CRP levels are elevated propoional to disease activity. 