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Circle Health Group

Lung function testing

Lung function testing provides detailed results of how your lungs are working. Book an appointment today.

  • Spirometry
  • Lung volumes
  • Pulmonary gas transfer
  • Exhaled nitric oxide
  • Airway responsiveness to mannitol
  • Serial peak flow 
  • Oximetry

What is lung function testing?

These are detailed tests of how the lungs are working, able to measure the size of the lungs, how efficient they are, oxygen levels in the blood, and whether the airways are inflamed or narrowed.

How does it work?

The tests are usually performed in a controlled hospital setting and mainly involve blowing into a tube connected to a machine.

What are the benefits?

These tests can provide important information about the lungs, particularly as to identifying which part of the lungs is responsible for symptoms, and how severe the problem is. They are useful in diagnosis and management of a wide range of diseases including asthma, COPD, and lung fibrosis. Modern tests can measure inflammation in the airways (exhaled nitric oxide) and levels of airway responsiveness (mannitol challenge), which can give important additional information for patients with asthma. Repeating such tests and comparing periods at work and away from work, can also help identify breathing problems caused or made worse by work.

How safe is the treatment?

These are diagnostic tests which are carried out on a daily basis by trained physiologists throughout the UK and are very safe. Individuals are carefully screened before such tests are carried out to ensure patient safety at all times.

Specialists Offering Lung function testing

Dr Bhagyashree Jayaraman

Consultant Physician

MRCP ( Respiratory medicine); MRCP(General medicine); DTCD; MBBS

BMI The Cavell Hospital 1 more BMI The Kings Oak Hospital

View profile Book online

Dr Christopher Barber

Consultant Respiratory Physician


BMI Thornbury Hospital

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Dr Omendra Narayan

Consultant Respiratory Paediatrician


BMI The Alexandra Hospital

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Dr Irfan Hafeez

Consultant Physician in Respiratory Medicine


BMI The Beardwood Hospital

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Dr Amer Saleem

Consultant Respiratory Physician

BSc, MBBS, MCPS Medicine (Pak), MRCP (UK), FCPS Pulmonology (Pak), FRCP (Glasg), FCCP (US)

BMI The Saxon Clinic

View profile Book online

Dr Enson Thomas

Consultant Respiratory Physician


BMI The Manor Hospital 2 more BMI Three Shires Hospital BMI The Saxon Clinic

View profile Book online

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Ways to pay

credit card

Pay for yourself

Pay for yourself with our fixed price packages. This includes your pre-assessment, treatment, follow-ups and 6 months' aftercare

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Pay with health insurance

We are widely recognised by health insurers. Ask your insurer about your cover and for an insurer pre-authorisation code

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direct debit

Spread the cost

Pay for yourself with the BMI card and spread the cost over 12 months, interest-free (terms and conditions apply)

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