Allergy, Asthma and Immunology
The board-certified experts at Main Line Health can help develop treatments to control and manage your allergy and asthma symptoms.
Peak flow measurement is a quick test to measure air flowing in and out of the lungs.
The measurement is called the peak expiratory flow rate (PEFR). It’s also known as the peak expiratory flow (PEF). Peak flow measurement is mostly done by people who have asthma.
Peak flow measurement can show:
During the test, you blow forcefully into the mouthpiece of a device. A peak flow meter (PFM) is used most often. This is a small handheld device made of plastic. A PFM is small and light enough to be used almost anywhere. It’s important to use the same PFM on a regular basis. The readings can vary between brands and types of meters. In some cases, the test is done in a healthcare provider's office or a hospital with a spirometer. This device has a handheld mouth piece that’s attached by cord to a larger electronic machine.
An important part of peak flow measurement is noting peak flow zones. Peak flow zones are areas of measurement on a peak flow meter. The goal of the peak flow zones is to show early symptoms of uncontrolled asthma. Peak flow zones are set differently for each person. Your healthcare provider will help determine your peak flow zones.
The 3 peak flow zones are noted by color and include:
The board-certified experts at Main Line Health can help develop treatments to control and manage your allergy and asthma symptoms.
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