Skip to Content
Put the pointer on the gauge of the peak flow meter to 0 or
the lowest number on the meter. In the photo, this is about
Attach the mouthpiece to the peak flow meter. Some meters
don't have a separate mouthpiece.
While standing, take a deep
Put the peak flow meter mouthpiece in your mouth, and close
your lips tightly around the outside of the mouthpiece. Don't put your tongue
inside the mouthpiece.
Breathe out as hard and as fast as you can for 1 or 2 seconds.
A hard and fast breath usually produces a "huff"
Check the number on the gauge, and write it down. This is your
peak expiratory flow (PEF). In the photo, the PEF is about
ByHealthwise StaffPrimary Medical ReviewerJohn Pope, MD - PediatricsSpecialist Medical ReviewerLora J. Stewart, MD - Allergy and Immunology
Current as ofMay 23, 2016
Current as of:
May 23, 2016
John Pope, MD - Pediatrics & Lora J. Stewart, MD - Allergy and Immunology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
© Copyright 2017 Rush Copley Medical Center • 2000 Ogden Avenue; Aurora, IL 60504
Main: 630-978-6200 • Physician Referral & Information: 630-978-6700 or 866-4COPLEY (866-426-7539)