![]() Repeat two times, and record the highest of the three numbers in your chart.Īll three measurements should be about the same to show that a good effort was made each time.Do not cough, spit or let your tongue block the mouthpiece.Blow out as hard and as fast as possible into the peak flow meter (one to two seconds).Place the meter in your mouth and close your lips around the mouthpiece. ![]()
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