Asthma is a chronic disease where your airways become inflamed. FeNO testing, a type of lung function test, can help your doctor tell how much inflammation is in your lungs. It can also be used to rule out other conditions with asthma-like symptoms. The results of this test can help you and your doctor find the best treatment plan to manage your asthma. Download this FREE PDF to learn more about FeNO testing. This is the English version of this handout.
This is the English version of this handout. You can find the Spanish version here.
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