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Reversibility assessment

A reversibility assessment is a test to see if your breathing problems improve with the help of an inhaler

About

A reversibility assessment is a test to see if your breathing improves with the help of an inhaler or medication. It's often a part of a spirometry, which is a test to see how well your lungs are working. Both tests can help you to find out if you have asthma or another breathing problem.

Need to know

  • What happens icon plus

    We'll start by asking you to carry out a baseline spirometry. This involves breathing in and out of a spirometer, a special instrument that measures how much air you can push out your lungs in one breath. We'll then ask you to breathe in increasing doses of a dry powder called Mannitol. After each dose, we'll ask you to repeat the spirometry so we can assess any changes. If your airway is normal, then it won't react to the mannitol. If you have hyper-sensitive airways (such as in asthma), then the mannitol will affect the airways and we'll see a change in your sipometry results during the test. A reversibility assessment lasts about 30 minutes.
  • How to prepare icon plus

    A spirometry and reversibility assessment doesn't require any special preparation beforehand. Your GP or consultant respiratory therapist will explain what's involved and answer any questions you might have.
  • Afterwards icon plus

    A reversibility assessment takes about 30 minutes. Your GP or respiratory therapist will explain the results of the test immediately after it. You'll also be able to go home straight after.
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From complex surgery to straightforward procedures, we provide exceptional care across our network of hospitals, outpatient centres and specialist clinics.

  • London Bridge Hospital Facility

    London Bridge Hospital

    27 Tooley Street

    London

    SE1 2PR

    Appointments and Enquiries 020 7234 2009
    Imaging Appointments 020 7234 2773
    Switchboard 020 7407 3100

  • The Lister Hospital Facility

    The Lister Hospital

    Chelsea Bridge Road

    London

    SW1W 8RH

    Appointments 020 7811 4000
    Enquiries 020 3131 4978

Request an appointment

We're happy to help you make an appointment with one of our experienced consultants.

This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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