A spirometry test measures the volume of air inhaled and exhaled. Spirometry allows for the assessment of airway function. The spirometer, the apparatus used for this test, is connected to a computer that processes the data and allows you to get a result.


It is primarily a test used to assess respiratory capacity. It is most often used in the diagnosis of asthma. In addition, it is also used in other respiratory and circulatory disorders. During the spirometric examination a so-called pharmacological test may be performed. This is used in the selection of asthma medication.

Procedure of the spirometry examination

For the test the patient is fitted with a special nose clip so that the air inhaled and exhaled passes completely through a special mouthpiece, which is connected to the spirometer. Before the examination, the patient should take several deep breaths.

The test begins by taking a very deep breath and then quickly blowing air into the device until your lungs are empty. Subsequent actions should be performed in accordance with the instructions of the examiner.

The test takes several minutes. The result is given in the form of a graph, figures and description. A spirometric test is ordered by a doctor.

Indications for spirometry

  • respiratory system diseases (asthma)
  • diseases of the circulatory system
  • Pulmonary parenchyma surgery
  • COPD – chronic obstructive pulmonary disease.

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