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Lung Function Test

Lung function test is a complete evaluation in measuring how well your lungs work. This includes how well you are able to breathe and how well your lungs are able to supply oxygen to the rest of your body. It is also known as Spirometry.


Your doctor may order this test:

  • if you are having symptoms of lung problems
  • as part of a routine physical examination
  • to assess how well your lungs are functioning before undergoing surgery


Lung function test can be used to help diagnose:

  • asthma
  • allergies
  • chronic bronchitis
  • respiratory infections
  • emphysema
  • lung fibrosis
  • bronchiectasis (a lung condition in which the airways in the lungs are stretched and widened)
  • chronic obstructive pulmonary disease (COPD)
  • asbestosis (a condition caused by exposure to asbestos)
  • sarcoidosis (inflammation in the lungs, liver, lymph nodes, eyes, skin, or other tissues)
  • scleroderma (a disease of the connective tissue)
  • lung cancer