Bronchodilator Reversibility Testing

Bronchodilator Reversibility Testing helps determine if a person's airway obstruction improves after using a medication called a bronchodilator. During the test, lung function is measured before and after inhaling the medication. If the lung function significantly improves—usually a specific increase in airflow measurements—it suggests reversible airway narrowing, typical of asthma. If not, it may indicate conditions like chronic obstructive pulmonary disease (COPD). This test helps doctors diagnose the type of lung problem and guide appropriate treatment by assessing how responsive the airways are to medication.