Inhaler Peak Flow Meter for Asthma Management

An inhaler peak flow meter is a medical tool used by individuals with asthma to measure the highest airflow out of their lungs in a single fast burst.

Inhaler Peak Flow Meter FAQ

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Can I use a peak flow meter to monitor my asthma?

Using a Peak Flow meter to monitor your asthma can be very useful when used together with an Asthma Peak Flow diary and Asthma Control Test. You can obtain a Peak Flow meter from your GP and they will show you how to use and interpret it. Your peak flow meter helps you with your asthma control.

What is a peak flow test?

Peak flow is a simple measurement of how quickly you can blow air out of your lungs. It's often used to help diagnose and monitor asthma. A peak flow test involves blowing as hard as you can into a small handheld device called a peak flow meter. These are available on prescription or can be bought from most pharmacies.

What is a peak flow meter?

Download a peak flow diary (PDF only, 1.06MB) from the Asthma + Lung UK website Your peak flow score – also known as your peak expiratory flow (PEF) – will be displayed on the side of your peak flow meter. This is given in litres of air breathed out per minute (l/min). What's considered a normal score depends on your age, height and sex.

How does asthma affect peak flow?

If you have asthma, you may sometimes have narrow airways. This will make it more difficult to blow the air out of your lungs quickly and can change your peak flow score. You measure peak flow by taking a full breath in and blowing out as hard and fast as you can into a small hand-held device called a peak flow meter.