II. Definitions

  1. Mixed Connective Tissue Disease (MCTD)
    1. Condition with combined features of Systemic Lupus Erythematosus, Myositis and Scleroderma

IV. Labs

  1. Screening
    1. ANA Titer
  2. Confirmation
    1. Anti-ribonucleoprotein Antibody (Anti-RNP)
      1. Test Sensitivity for MCTD: 71-100%
      2. Test Specificity for MCTD: 84-100%

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