AsthmaCheck Peak Flow Meters

Tracking how well your lungs are moving air is one of the most practical things you can do to stay ahead of an asthma flare-up. The AsthmaCheck Peak Flow Meter is a straightforward handheld device that measures peak expiratory flow rate (PEFR)—the fastest speed at which you can push air out of your lungs after a full breath in. A drop in your usual number often signals narrowing airways before you feel symptoms, giving you and your clinician time to adjust treatment.

This collection centers on the AsthmaCheck Peak Flow Meter (item 002068), a white plastic unit with a wide 60 to 810 LPM measurement range. That span suits both children with lower baseline readings and adults capable of higher flow, making it a sensible single choice for a household with more than one asthma patient. The plastic body is lightweight, easy to hold during a forceful exhale, and simple to read by sliding the indicator along the marked scale.

Using it is quick: stand or sit upright, take the deepest breath you can, seal your lips around the mouthpiece, and blow out as hard and fast as possible. Record the highest of three attempts. Most people establish a "personal best" over a couple of weeks of daily readings, then compare morning and evening numbers against that baseline. Many asthma action plans use a green-yellow-red zone system built directly around these values, so consistent readings from the same meter matter—which is why home users typically keep one device dedicated to a single patient.

Peak flow monitoring is a self-management tool, not a diagnostic replacement for spirometry, but it's the metric clinicians most often ask patients to log between visits. Clean the mouthpiece regularly with mild soap and warm water, and keep the tracking scale free of dust so the indicator slides freely.

For other point-of-use monitoring devices, see our Pressure-Check and QUICK CHECK collections.