How is rheumatoid arthritis (RA) diagnosed?

Updated: Jan 28, 2021
  • Author: Tyler Street, MD; Chief Editor: Eric B Staros, MD  more...
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RA is a chronic, autoimmune, peripheral polyarthropathy of unknown etiogenesis. The diagnosis of RA is made via clinical, laboratory, and imaging features, as no test results are pathognomonic. For patients with suspected RA, the following studies are potentially useful:

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