Breathing changes can be easy to overlook until everyday activities start to feel harder. A Spirometrics Service helps measure how well your lungs are working in a simple, non-invasive way. If your GP has suggested lung function testing, you may be wondering what the test can actually show, what happens on the day, and who is usually referred. Here is a clear guide to spirometry, with practical information for patients in Melbourne.
What is a Spirometrics Service and what does it measure?
Spirometry is a common lung function test that measures how much air you can breathe in and out, and how quickly you can blow air from your lungs. It is often used in general practice and respiratory care to provide objective information about breathing function.
During a spirometry test, you breathe into a mouthpiece connected to a machine. The machine records key measurements that help your doctor understand whether airflow appears normal or reduced.
These measurements may include:
- Forced vital capacity (FVC) — the total amount of air you can forcefully exhale after a deep breath
- Forced expiratory volume in one second (FEV1) — how much air you can blow out in the first second
- FEV1/FVC ratio — a comparison used to assess airflow patterns
Results from spirometry do not usually provide a diagnosis on their own. Instead, they give your treating doctor useful data that can be considered alongside your symptoms, medical history, examination, and any other tests that may be needed.
If you are looking for local support, Health West Medical offers a dedicated Spirometrics Service as part of its broader Services for the community.
What can a spirometry test tell you?
Spirometry can help identify whether your lungs are moving air normally or whether there may be a pattern of airflow limitation. This can assist your GP in assessing symptoms such as ongoing cough, wheeze, shortness of breath, chest tightness, or reduced exercise tolerance.
In practical terms, spirometry may help your doctor:
- Assess breathing symptoms more objectively
- Monitor known respiratory conditions over time
- Check response to prescribed treatment when clinically appropriate
- Support pre-employment, insurance, or medical assessment requirements in some cases
- Establish a baseline measure of lung function for future comparison
For example, if you become puffed walking up stairs, spirometry may help show whether airflow appears reduced compared with expected ranges for your age, height, sex, and background. If you already have a diagnosed respiratory condition, repeat testing may help your doctor monitor trends rather than relying on symptoms alone.
It is worth remembering that spirometry is one piece of the picture. A normal result does not rule out every cause of breathing symptoms, and an abnormal result still needs medical interpretation.
Who might be referred for lung function testing?
Your GP may recommend spirometry if you have symptoms, a medical history, or workplace factors that make lung function testing relevant. Referral is based on clinical judgement and your individual circumstances.
Common reasons for referral
- Persistent cough that is not improving
- Shortness of breath during normal daily activity
- Wheezing or ongoing chest tightness
- A history of smoking or long-term exposure to dust, fumes, or chemicals
- Monitoring of an existing respiratory condition
- Assessment before certain procedures or for occupational health purposes
Some patients are referred because they feel anxious about their breathing and want clearer information. That is understandable. Having measured results can make the conversation with your GP more specific and more reassuring.
At a community-based clinic such as Medical Centre Werribee, spirometry can also be a convenient option for patients who prefer care closer to home rather than attending a larger hospital setting for initial testing.
What happens during spirometry and how can you prepare?
The test itself is straightforward and usually takes a short appointment. A clinician will explain each step and guide you through the breathing manoeuvres. If you are nervous, that is completely normal. You will generally be asked to sit upright, use a mouthpiece, and wear a nose clip so the machine can measure airflow accurately.
What to expect on the day
- Your height, age, and other relevant details may be recorded
- You will be shown how to take a deep breath in
- You will then blow out as hard and as fast as you can into the device
- The test is usually repeated several times to check consistency
- In some cases, repeat testing may be done after medication if requested by your doctor
Good preparation helps improve accuracy. You may be advised to avoid smoking before the test and to follow any instructions about inhalers or other medicines. Because recommendations can vary, it is best to follow the specific directions provided by your clinic or referring doctor.
Some people feel briefly light-headed after blowing forcefully, but the test is generally well tolerated. The team performing the test will let you pause between attempts and will explain what the numbers mean in a general sense. Formal interpretation and next-step advice should come from your treating doctor, who can review the results in context.
If you have been referred for lung function testing in Melbourne, choosing an experienced, patient-focused clinic can make the process feel much easier. Health West Medical provides evidence-based care in a supportive setting, with a modern approach designed to help patients feel informed and comfortable throughout the appointment.
