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Lung Function Tests

Lung Function Tests at Pall Mall Medical

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What is a lung function test (PFT) used for?

Lung function tests are a range of tests used to measure how well your lungs work and can help diagnose the cause of breathing problems.

These tests measure how much air your lungs can take in and how fast you can blow this out, to see whether your lung capacity is in the normal range. Lung function tests also measure how well your lungs deliver oxygen to your blood and how strong your breathing muscles are.

A range of conditions can be diagnosed using these tests including:

·       Chronic obstructive pulmonary disease (COPD) – which includes a range of lung diseases that can cause breathlessness, frequent chest infections and a phlegmy cough.

·       Asthma – which leads to shortness of breath and is often caused by allergies.

·       Pulmonary fibrosis – where scarring of the lungs can cause shortness of breath.


Spirometry lung function test

Spirometry is the most common lung function test and it measures how much air you can move out of your lungs and how quickly. The test is very simple and you will be asked to breathe into a mouthpiece attached to a spirometer which records the results. The results can then be printed out on a chart called a spirogram.

A spirometry can measure a range of lung functions including the amount of air you can exhale with force after a deep inhale (forced vital capacity), the amount of air you can exhale with force in one breath (forced expiratory volume), the volume of air flow halfway through an exhale (forced expiratory flow) and much more.

You can discuss your specific concerns with one of our consultants who will be happy to arrange the appropriate spirometry or other PFT with you.

Lung function test prices



Lung function test / Spirometry

(Excludes appointment, from £25 with HCA or £70 with GP; Consultation not included)




If you are interested in a more compreshensive assessment of your lungs, check out our full lung health screen here.