Move the marker back to the bottom, and repeat these steps two more times. If you cough or make a mistake, do not include this as one of your three tries.
Record the highest of the three numbers in your peak flow diary.
Reviewed last on: 10/30/2006
Donald Accetta, MD, MPH, President, Allergy & Asthma Care, PC, Taunton, MA. Review provided by VeriMed Healthcare Network.