What is ‘Rheumatoid factor (RF)’?
Rheumatoid factors are antibodies [usually immunoglobulin (Ig) M or IgM] developed
against Fc portion of IgG. RF is commonly found in different autoimmune disorders
and chronic infections. RF is positive in approximately 70% cases of RA.
Rheumatoid factors are antibodies [usually immunoglobulin (Ig) M or IgM] developed
against Fc portion of IgG. RF is commonly found in different autoimmune disorders
and chronic infections. RF is positive in approximately 70% cases of RA.