Which studies may be considered in the workup of reactive arthritis (ReA)?

Updated: Dec 24, 2020
  • Author: Carlos J Lozada, MD; Chief Editor: Herbert S Diamond, MD  more...
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Other studies to be considered include the following:

  • Arthrocentesis, synovial fluid analysis, and synovial biopsy (often needed to rule out an infectious process, especially in monoarticular arthritis with constitutional symptoms)

  • Antistreptolysin O (ASO) or anti-DNase B testing (if poststreptococcal infection is suspected)

  • Electrocardiography (ECG; in patients with a prolonged course of ReA)

See Workup for more detail.

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