Peak expiratory flow rate

Alternative Names

Peak flow

Definition of Peak expiratory flow rate

The peak expiratory flow rate measures how fast a person can breathe out (exhale) air. It is one of many tests that measures how well the lungs are working.

Review

Andrew Schriber, MD, FCCP, Specialist in Pulmonary, Critical Care, and Sleep Medicine, Virtua Memorial Hospital, Mount Holly, New Jersey. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 10/14/2009

Lungs
Spirometry
Match test

ADAM Medical Encyclopedia

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