Lung Function Tests
What Affects the Test
Reasons you may not be able to
have the test or why the results may not be helpful include:
- Using medicine, such as albuterol, that expands the lungs' airways
within 4 hours of the test.
sedatives before the test.
- Eating food or
drinks that contain caffeine before the test.
- Not being able to
breathe normally because of pain.
- Pregnancy, obesity, or an
enlarged stomach (after a large meal, for example).
- Not being able
to follow instructions or make an effort during the tests.
What To Think About
Other Works Consulted
Chernecky CC, Berger BJ (2013). Laboratory Tests and Diagnostic Procedures, 6th ed. St. Louis: Saunders.
Fischbach FT, Dunning MB III, eds. (2009). Manual of Laboratory and Diagnostic Tests, 8th ed. Philadelphia: Lippincott Williams and Wilkins.
Gustafsson PM, et al. (2008). Multiple-breath inert gas washout and spirometry versus structural lung disease in cystic fibrosis. Thorax, 63(2): 129–134.
Pagana KD, Pagana TJ (2010). Mosby’s Manual of Diagnostic and Laboratory Tests, 4th ed. St. Louis: Mosby.
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Specialist Medical Reviewer||Mark A. Rasmus, MD - Pulmonology, Critical Care Medicine, Sleep Medicine|
|Last Revised||April 25, 2013|
WebMD Medical Reference from Healthwise
April 25, 2013
This information is not intended to replace the advice of a doctor.
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