The test measures the maximum amount of air that the patient can inhale and exhale from the lungs as well as the air flow rate in the respiratory tract. It is a non-invasive procedure. 

  • The test should be performed when you are in a good general condition, unless the physician instructed otherwise.
  • It is necessary to refrain from smoking for 24 hours before the test (or for at least 2 hours, should this requirement be a problem).
  • You should avoid intense physical workout for 30 minutes before the test.
  • It is also not recommended to consume hearty meals or drink strong tea, coffee or Coca-Cola for 2 hours before the test.
  • It is advisable to wear loose clothes that do not restrict the movement of your chest, removing a tie or a jacket immediately before the test.
  • It is important to agree with your referring physician, on an individual basis, which of the medications you take should be taken on the day of the test, and which should be discontinued. 

Proper preparation for the test will help you achieve a fully reliable result.