Most specific antibody seen in RA
Answer- A. Anti CCPThe presence of serum anti-CCP antibodies has about the same sensitivity as serum RF for the diagnosis of RA.However, its diagnostic specificity approaches 95% (most specific for RA), so a positive test for anti-CCP antibodies in the setting of an early inflammatory ahritis is usefrrlfor distinguishing RA from other forms of ahritis.
Anti CCP
Rheumatoid factor
ANA
Anti dsDNA