In this video, Dr Sanjay Sethi and Dr Heather Lehman explain that asthma diagnosis includes a detailed medical history, physical examination and lung function tests such as spirometry or peak flow. If more information is needed to make a diagnosis then other tests might include: imaging tests (x-ray), nitric oxide test, allergy tests, and methacholine challenge test.
Not everyone needs every asthma test, so talk to your doctor to find out what is best for you and to ensure no other medical problems are present.
Experts in asthma explain the common breathing tests used for asthma diagnosis and monitoring, and how they work. The breathing tests (also called lung function tests or pulmonary function tests) measure many aspects related to breathing, including how air moves through the breathing tubes. The most commonly used test is known as spirometry which is a simple test that measures how much air you can blow out of your lungs and how quickly. The experts also discuss peak flow measurement, methacholine challenge test, and briefly talk about lung volume measurement (also called diffusion capacity measurement).