What is a Peak Flow Meter?

1. It is a small device used to do a simple breathing test.

2. It can be used anywhere to check your asthma.

Not everyone with asthma needs a peak flow meter.

It is helpful when asthma is severe, or if you have trouble knowing when your asthma is getting worse.

The test must be done correctly to give useful results.

Each person has their own personal best peak flow result. It is the highest number you can blow when you feel well. Your personal best will likely change over time.

Your results should be compared to your personal best each time you do the test to help you decide how much your asthma is acting up.

When asthma problems are beginning, the number you can blow will be lower than your normal.

Peak flow readings can be used as a part of your asthma action plan.

Guidelines can be given by your doctor or asthma educator for when to use the peak flow meter and how to use the readings.

Take readings before medecine morning and night for 2 weeks when you are feeling well.

Your personal best will be the highest number you can usually blow during that 2 weeks.

Recheck your personal best number a couple of times a year.

View our How-To Guide to learn how a Peak Flow Meter is used.

NOTE: If you would like to use a peak flow meter, speak to your doctor or asthma educator for more information.

Some medical insurance plans or social assistance organizations will pay for a peak flow meter if you have a written order from your doctor.