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Peak Flow

What is peak flow, and how is it measured?

Peak Flow

What is peak flow, and how is it measured?

Dr Louisa Draper

"Your peak flow score can be an indicator of whether your airways have narrowed, which is a sign that you might have asthma." - Dr Louisa Draper

Dr Louisa Draper

"Your peak flow score can be an indicator of whether your airways have narrowed, which is a sign that you might have asthma."

Dr Louisa Draper

View Asthma Inhalers
A peak flow test (also called a peak expiratory flow test or PEF test) is a lung function test that measures how fast you can breathe out.  The measurement that’s taken is called your peak flow. A peak flow meter can be used to monitor your asthma and some other lung conditions.