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Peak Flow Meters

Photo of kinds of peak flow meters

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A peak flow meter is an inexpensive, pocket-sized device that measures peak expiratory flow (PEF), or how fast a person can breathe out. To measure PEF, the person takes a deep breath and then blows into a tube on the peak flow meter as hard and as fast as possible. This can be done at home.

Peak flow meters come in many shapes and sizes.

By Healthwise Staff
Primary Medical Reviewer Adam Husney, MD, MD - Family Medicine
Specialist Medical Reviewer Sue Barton, PhD, PsyD - Behavioral Health
Last Revised August 26, 2011

Last Revised: August 26, 2011

Author: Healthwise Staff

Medical Review: Adam Husney, MD, MD - Family Medicine & Sue Barton, PhD, PsyD - Behavioral Health

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