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Spirometry is the most common of the lung function tests. These tests look at how well your lungs work. Spirometry shows how well you breathe in and out. Breathing in and out can be affected by lung diseases such as chronic obstructive pulmonary disease (COPD), asthma, pulmonary fibrosis and cystic fibrosis.
The spirometry results are compared before and after you inhale the spray to see what changes there are in your breathing. You will be given additional information in PPS at the time of the test. A laryngoscopy is a procedure that may be scheduled after the bronchial provocation test.