Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Peak Flow Meters

Three types of peak flow meters

© Healthwise, Incorporated

A peak flow meter is an inexpensive, pocket-size device that measures peak expiratory flow (PEF), or how much air a person can quickly 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.

Current as of: February 24, 2020

Author: Healthwise Staff
Medical Review:
John Pope MD - Pediatrics
Adam Husney MD - Family Medicine
Elizabeth T. Russo MD - Internal Medicine
Caroline S. Rhoads MD - Internal Medicine
Lesley Ryan MD - Family Medicine

Call Us At (978) 531-7677