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What is a peak-flow test?

A peak-flow test, a simple test that measures how fast you breathe out, is used to help diagnose asthma and evaluate your response to treatment. It involves blowing into a small plastic tube, which then produces a measurement of lung function and enables diagnosis of asthma that is becoming worse or an oncoming asthma attack.

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Author: Dr Idan Ben-Barak PhD, MSc, BSc (Med)
First answered: 17 Jul 2015
Last reviewed: 17 Oct 2018
Rating: 4.8 out of 5
Votes: 742 (Click smiley face below to rate)
Category: How to use an asthma spacer


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