Step 1
Move the marker to the bottom of the scale. |
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Step 2
Stand up straight. Take a deep breath and fill your lungs all the way. |
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Step 3
Hold your breath while you place the mouthpiece in your mouth, between your teeth. Close your lips around it. Do not put your tongue inside the hole.
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Step 4
Blow out as hard and fast as you can. Your peak flow meter measures how fast you can blow out air. You want to move the marker as far as you can with your breath. |
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Step 5
Write down the number you get. If you cough or make a mistake during the measurement, do not write down the number. Do it over again. Repeat steps #1 to #5 two more times. Write down the highest of the 3 numbers. This is your peak flow number. |
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Step 6
Check to see which peak flow zone your peak flow number is in. Follow the plan developed by you and your health care provider for the appropriate zone. |
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