1. Health
You can opt-out at any time. Please refer to our privacy policy for contact information.

How to Use a Peak Flow Meter


Updated: September 19, 2008

5 of 8

Exhale Through the Peak Flow Meter Fast and Hard
Peak Flow Meter Exhale

Exhaling Through Peak Flow Meter

Photo courtesy of A.D.A.M.
Next, you want to breathe out what is called a "hard, fast blast." This means that you blow out as hard and fast as you can through the peak flow meter. Do NOT breathe out slow and steady. That will not show how strong your lungs are. Instead, focus on exhaling forcefully and quickly, to move the marker as far as you can with your breath.

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.