Diagnosis of asthma is emerging to be a breakthrough. Mostly, breathing tests are conducted on patients in order to measure how well their lungs are working. One of the best known tests is spirometry.
During this test, the patient has to take a deep breath and then has to blow the exhaled air in the sensor which goes out to measure the amount of the air that the lungs can hold-in during inhalation or exhalation. This is one of the best known tests for the diagnosis of asthma.
Also, since most of the people who suffer from asthma are also prone to allergies, doctors also conduct the allergy tests in order to treat the underlying allergies that can trigger asthma in the later stages and thus avoid it, all together.