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The investigation of extrinsic allergic alveolitis includes the following:

  • blood tests to assess:
    • inflammatory markers
    • eosinophilia
    • specific precipitating antibodies
    • blood gas status
  • chest radiography
  • lung function tests to assess:
    • the restrictive ventilatory defect
    • the decreased transfer factor
  • allergen sensitivity tests
  • tissue sampling:
    • bronchoalveolar lavage
    • biopsy

Last reviewed 01/2018