To diagnose asthma, physicians rely on a combination of medical history, physical exams, and laboratory tests.
These tests may include:
a simple test to measure lung function that involves a patient exhaling into a device called a spirometer
Peak Flow Monitoring
measures the fastest speed at which a person can blow air out of the lungs
measures the response of your airways to substances that may be causing asthma
Exercise Stress Test
determines the effect of exercise on lung function