Normal Peak Flow

A great question from a HealthTap patient:


I’m a 68 yr. old female. 5ft. 6in, with copd. What should my peak flow be. Thank you?
How long have you had COPD? In a healthy 68yo who is about your height, normal peak flow is 360-375 or so. 
What are normal and abnormal peak flow readings?
Normal peak flow readings vary, depending on your age, size, and sex. The range of normal peak flow readings is published on a chart, and doctors and nurses refer to the chart when they check your peak flow reading. In healthy people, peak flow readings vary slightly from time to time. The reading is often slightly higher in the evening compared with the morning.
Peak flow normal values
Below is an example of a two-week diary of peak flow readings done by a child who has quite bad asthma.
peak flow

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