Spirometry helps tell how well your lungs are working. During this test, the patient will sit down and into a spirometer which evaluates how much is breathed in and out over the course of a minute and how much air is left in your lungs.
Bronchodilator Reversibility test is the same as the spirometry test except the patient is given a bronchodilator, which is a medication that opens the airway. This helps exclude other things like asthma.
Chest X-rays help rule out other diseases with similar symptoms like pneumonia, congestive heart failure, and cancer. You may not be able to diagnosis COPD from