Key Players Covered The major companies covered in the global rheumatoid arthritis testing market report include Abbott Laboratories, F. Hoffmann-La Roche Ltd., Beckman Coulter, Inc., Siemens Healthcare GmbH, Microdrop LLC (imaware), Augurex Life Sciences Corp., Qiagen, Svar Life Science AB (Euro Diagnostica), Exagen Inc., Aviva Systems Biology Corporation, Bio-Rad Laboratories Inc., and other players.