What are the minimum criteria for serial measurements of peak flow to maintain a high degree of diagnostic accuracy?

* 3 The diagnostic performance of serial peak flow measurements falls when fewer than four readings a day are made.


Malo JL, Cote J, Cartier A, Boulet LP, L'Archeveque J, ChanYeung M , How Many Times Per Day Should Peak Expiratory Flow Rates Be Assessed When Investigating Occupational Asthma? , Thorax , 1993 ; 48 : 1211-1217

Principal reccomendations

This statement supports the following principal reccomendations

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Health practitioners who suspect a worker of having occupational asthma should arrange for workers to perform serial peak flow measurements at least four times a day.

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