Rheumatoid Arthritis (RA) is caused when the immune system sends antibodies to attack your joints, leading to joint destruction and disability. While there is no current cure for RA, treatment is possible. Treatment of RA is best done within 3 to 6 months after symptoms start, since permanent joint damage can occur within the first 2 years. This blog will discuss the common antibodies which are tested for in RA diagnosis, and highlight additional uses of antibody testing in RA.