Spirometry tests use a tool called a spirometer to diagnose and track the progression and treatment of certain lung conditions. The spirometer measures how much air you can breathe out in one breath.
Your doctor will generally do a spirometry test if you're having respiratory problems, either to diagnose or rule out a lung condition. Certain factors raise your risk of a respiratory condition and may make your doctor more likely to run this test; people over 35 who are regular smokers, and those with persistent coughs fall into this category.
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