PeakFlowPal - Peak Expiratory Flow Meter

PeakFlowPal is a tool used to measure peak expiratory flow rate in individuals, often used in managing respiratory conditions.

PeakFlowPal FAQ

Image credit: asthma.org.au

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 peak flow?

Peak flow is less than 50% of your personal best. To find the number ranges for your Asthma Action Plan zones, multiply your personal best peak flow by 1.0 (100%), 0.8 (80%), and 0.5 (50%). Record these ranges in your asthma diary so that you can refer to them easily.

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.

Why are peak flows important?

In this case, peak flows help me to know when I need to take extra rescue medicine. Peak flows can also help you see how well you’re responding to a new treatment, or determine patterns in your breathing—for example, for people with asthma, peak flow is often worse in the morning and better in the evening.

Why is peak flow important?

It’s important to know your best peak flow. This will help you keep on top of your asthma. It’s also helpful for when you visit your GP or asthma nurse as it will let you both assess your asthma. Why is measuring peak flow useful?

How do I use my peak flow device properly?

Follow these steps to make sure you use your peak flow device properly. When using your peak flow device, either sit or stand, but try to do it the same way every time. Repeat your peak flow measurement three times in total and record your highest score in your peak flow diary. Please watch this video on how to perform a Peak flow test.