Check these sources: Your doctor should do this at a visit, for best results, as meters can vary. See these sources for info, including normal values: http://www.Lung.Org/lung-disease/asthma/living-with-asthma/take-control-of-your-asthma/measuring-your-peak-flow-rate.Html & http://www.Asthma.Partners.Org/applets/peakflowpredicted.Html & http://goo.Gl/uk9yf.
Answered 5/22/2015
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