Asks and assists the person to sit in an upright position.
;Inserts a disposable mouthpiece into the peak flow meter or uses a single-use/reusable
peak flow meter.
;Ensures that the needle on the gauge is pushed down to zero.
;Asks the person to hold the peak flow meter horizontally, ensuring that their fingers do not impede the gauge.
;Asks the person to take a deep breath in through their mouth to full inspiration.
;Asks the person to place their lips tightly around the mouthpiece immediately, obtaining a tight seal.
;Asks the person to blow out through the meter in a short sharp ‘huff’ as forcefully as they can.
;Accurately documents the highest of the three acceptable readings.
;Disposes of equipment appropriately