• Given the cost and risk associated with biologic disease modifying anti-rheumatic drugs (bDMARDs), selection of the optimal medication is imperative. Current attempts to identify genetic factors that predict bDMARD response and effectiveness in rheumatoid arthritis patients have been inconclusive. Furthermore the presence of epigenetic signatures in rheumatoid arthritis patients has not been established. This protocol is the first step to identifying the practicality and feasibility of epigenetic testing to aid in diagnosis and/or medication selection in rheumatoid arthritis patients. Subsequent research into such epigenetic changes may be indicative of bDMARD response and/or safety. If such epigenetic signatures (EGS) exist the business need for such tests will thus be supported.