When should joint aspiration and synovial fluid analysis be considered in patients with rheumatoid arthritis (RA)?

Updated: Feb 07, 2020
  • Author: Howard R Smith, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Consider joint aspiration when making the definitive diagnosis of RA or when ruling out coexistent infection or crystal arthritis in an acutely swollen joint. New-onset monoarticular arthritis or an unusual pattern of a joint flare in a patient with RA should encourage strong consideration of joint aspiration and synovial fluid analysis.


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