This test is used to find out how well your lungs are working. Read on to learn what      to expect.   
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Detailed information about peak flow measurement, a quick test to measure air flowing      out of the lungs.   
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Pulmonary function tests (PFTs) are noninvasive tests that show how well the lungs      are working. Read on to learn what to expect before, during, and after these tests.   
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Pulse oximetry is a test used to measure the oxygen level (oxygen saturation) of the      blood. It is an easy, painless measure of how well oxygen is being sent to parts of      your body furthest from your heart, such as the arms and legs.   
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