Asthma tests are prescribed for individuals who are suspected of having asthma or to monitor the treatment of this condition. Asthma is an obstruction of the lower airway, caused by inflammation, mucus clogging and muscle spasms around the bronchial tubes.

Exposure to allergy triggers often produces symptoms such as chronic coughing, wheezing and breathing problems. In rare cases, a severe asthma attack can be fatal.

Tests used in the diagnosis and treatment of asthma fall into two categories:

1. Assessing lung function
   
   
2. Identifying allergens or other triggers that may lead to an asthma attack