What Happens in a Spirometry Test?

Breathing in and out can be affected by lung conditions such a chronic obstructive pulmonary disease (COPD), asthma, pulmonary fibrosis and cystic fibrosis. It is important to understand your lung health as it will help you improve your health and wellbeing.

What does spirometry involve?

Spirometry is a simple test that is not painful. You will be asked to blow into a device called a spirometer which measures how much air you can breathe out of your lungs. First, you breathe in fully and then seal your lips around the mouthpiece of the spirometer. You then blow out as fast and as far as you can until your lungs are completely empty. You will also be asked to breathe in fully and then breathe out slowly as far as you can. You will need to repeat this test a few times to ensure the measurements are accurate and consistent. You will be given time to recover between tests. You may feel a bit puffed or lightheaded afterwards. If this doesn't pass quickly, let the staff know.

How do I prepare for my spirometry test?

Before your test, there are a few things we would like you not to do to ensure you are breathing as well as possible.

• use a bronchodilator inhaler
• drink alcohol or drinks containing caffeine
• eat a large meal
• wear tight clothing that makes it difficult for you to take a deep breath
• do strenuous exercise
• smoke

Otherwise, sit back and relax!

How long does the test take?

Your appointment will take 10-12 minutes to complete.

Are there any risks?

Spirometry is quite a safe test, but blowing out hard can increase the pressure in your chest, tummy (abdomen or puku) and eyes. You may be advised not to have a spirometry test if you have:

• unstable angina or have had a recent heart attack or stroke
• had a recent pneumothorax (collapsed lung)
• had a recent operation on your eye, head or abdominal surgery
• recently coughed up blood and the cause is not known.

Also let the staff know if you have a cold, the flu, nausea, diarrhoea or vomiting.

What do the results mean?

Our clinician will discuss the results of your test with you. The results will show whether you have a problem with your lungs by comparing your measurements with someone of the same age, sex and size. The results can also help determine what type of lung problem you have.

Is spirometry different from peak flow meter tests?

Yes, spirometry is different from peak flow meter tests. A peak flow meter also measures how well your lungs are working by blowing into a device. It is not as accurate as spirometry but it is more convenient and you can use it at home. It is usually used to help diagnose and monitor asthma. Read more about peak flow meters.

Will my results be given to my employer?

No, your results are strictly confidential and no individual clinical information will be given to your employer. We report anonymously to your organization if requested, however, there is no way they can identify individual data.

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