[Guest]

I recently purchased a low range peak flow meter my 8.5 y.o. son as predicted average peak expiratory flow his height (51 inches) is 254. In recent days he has been obtaining values of 400 or above (his peak flow meter only goes to 400). Is re anything to be concerned about him having an above average peak flow rate? Many thanks!

[Guest]

No, there is a range of peak flows and above the normal is o.k..