Peak Flow Meter
Current as of: June 9, 2019
Author: Healthwise Staff
Medical Review:E. Gregory Thompson, MD – Internal Medicine & Adam Husney, MD – Family Medicine & Elizabeth T. Russo, MD – Internal Medicine
A peak flow meter is an inexpensive, pocket-sized device that measures peak expiratory flow (PEF), or how much air a person can exhale. To measure PEF, the person takes a deep breath and then blows (huffs) into a tube on the peak flow meter as hard and as fast as possible. To get the most accurate PEF, the peak flow…