During this test, you breathe forcefully into the mouthpiece of aspirometermachine.
(FEV1 stands for “forced expiratory volume in one second.")
Purpose of an FEV1 Test
FEV1 testing is used when you have signs of impaired lung function.
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Many pulmonary diseases affect your lungs in a way that slows down the rate at which you exhale.
Associated Tests
FEV1 is one of thepulmonary function tests(PFTs) done to evaluate lung function.
When Is an FEV1 Test Done?
Can I Perform an FEV1 Test at Home?
Be sure to talk to your healthcare provider about any new health issues before your test is scheduled.
Timing
An FEV1 test should take about 10 minutes.
Additional testing, such as imaging, can result in your appointment lasting a few hours.
What to Wear
Be sure to wear loose comfortable clothing.
Food and Drink
you could eat and drink as usual prior to having your FEV1 test.
Cost and Health Insurance
The cost of your FEV1 test may be covered by health insurance.
You should also bring a form of identification, your insurance card, and a method of payment.
Your test may include an FEV1 measurement without your inhaler, followed by an FEV1 measurement with your inhaler.
Pre-Test
You will be asked to sit in a chair and begin by breathing comfortably.
A clip will then be placed over your nose.
Throughout the Test
A spirometer has a tube that you must seal your lips tightly over.
Your exhaled air volume will be measured at one second.
Your team may also measure your total air volume exhaled.
These readings will be instantly displayed.
The procedure is repeated at least three times to obtain a consistent and average FEV1 value.
After your measurements are taken, you may have the whole test repeated after you use abronchodilator.
Rarely, the test can make you feel a bit out of breath due to the effort exerted.
The percentage of FEV1 reduction can be used as a guideline to assess the severity of your disease.
If you are diagnosed with pulmonary disease, you will need treatment.
It’s important to note, however, that your symptoms are more important than your numbers.
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