Peak Flow Meter

(Handheld device for asthma management)

The Peak Flow Meter can help you monitor your asthma by measuring how fast you are able to breathe out, indicating whether your airways are narrowed.

Results after
3 blows – the highest result of the 3 is the measurement you should record.
How well it works
Using a Peak Flow Meter regularly can help detect changes in your condition, keeping you in control.
£15.00 / peak flow meter
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How the Peak Flow Meter works

The Peak Flow Meter measures your peak expiratory flow (PEF) by taking a reading of the force of air in litres per minute when you blow sharply into it.

Using the Peak Flow Meter regularly can help you monitor your asthma, even if you aren’t experiencing any symptoms, by indicating if your airways are restricted or inflamed.

How to use the Peak Flow Meter

  1. Get comfortable

    Make sure you are in a comfortable position, either sitting or standing. Reset your Peak Flow Meter by pulling the counter back as far as it will go to the top near the mouthpiece.

  2. Take the breath and blow into the Meter

    Take the deepest breath you can, and blow as hard and fast as you possibly can into the Meter, with your mouth tightly around the mouthpiece.

  3. Repeat 3 times

    Repeat this process 3 times in a row, and use the highest of the 3 scores as your final measurement – all 3 scores should be roughly the same.

How Numan works

It’s healthcare without the hassle.

Free online consultation

Free online consultation

Once complete, your consultation will be reviewed by our clinicians. Most prescriptions are approved the same day.

Continuous care

Continuous care

Have any questions or want to change your medication? Speak to our clinicians and they’ll be able to help.

Free 24-hour delivery

Free 24-hour delivery

If your treatment is approved, it’ll be posted to you discreetly within 24 hours.

Cancel anytime

Cancel anytime

If you’re not happy with the service, or simply don’t need treatment anymore, you can cancel anytime.

The Peak Flow Meter: facts you need to know

Straightforward answers to frequently asked questions.