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Risks

There are no significant risks associated with measuring peak expiratory flow (PEF). Breathing in and out very quickly during the test may make you feel lightheaded or may make you cough. If you feel lightheaded, stop the test.

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Author:	Maria G. Essig, MS, ELS	Last Updated: January 24, 2007
Medical Review:	Martin Gabica, MD - Family Medicine R. Steven Tharratt, MD, MPVM, FACP, FCCP - Pulmonology, Critical Care, Medical Toxicology
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