Test Protocol for Peak Flow
- Fit the mouthpiece to the Peak Flow Meter.
- Ensure that the pointer is set to zero on the scale.
- Hold the Peak Flow Meter so that your fingers are clear of the scale and slot. Do not obstruct the holes at the end of the Peak Flow Meter.
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- Stand up if possible. Take a deep breath, place the Peak Flow Meter in the mouth and hold horizontally.
- Close the lips around the mouthpiece, then blow as hard and as fast as possible.
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- Note the number on the scale indicated by the pointer.
- Return the pointer to zero and repeat the procedure twice more to obtain three readings. Mark the highest of the three readings.

