+61 2 9812 3709 reception@mqrs.com.au


Lung Function Laboratory

Respiratory (or Lung) function tests (RFTs) are non-invasive diagnostic tests which provide feedback regarding the function of the lungs. Our Laboratory assists in the investigation and management of a wide range of lung conditions including asthma, smoking-related diseases and other complaints of breathlessness.

Lung function tests offered at Macquarie Respiratory and Sleep include:

  • Full Lung Function (Spirometry with pre & post bronchodilator/ DLCO/ Lung Volumes)
  • Spirometry (pre & post bronchodilator)
  • FOT (Forced Oscillation Technique)
  • FeNO (Fractional exhaled Nitric Oxide test)
  • MIPs & MEPs (Tests of Respiratory Muscle Function)
  • Mannitol Challenge Testing (Bronchial Provocation test)
  • CPET (Cardiopulmonary Exercise Test)
  • 6-minute walking test (On request)

Respiratory Lab Director

Prof Matthew Peters

To make a direct referral to the Lung Function Laboratory, please download and print the referral form and fax to (02) 9812 3844 or email to reception@mqrs.com.au


Download Lung Function Test Request Form


Download CPET Form


Why are Respiratory function tests required?

There are many reasons as to why a Lung function test may be performed. Some people need just one test, while others may require repeat tests so that results can be compared over time. Doctors may request an RFT as part of a routine health check, to confirm/exclude the diagnosis of specific lung disease, or as part of the screening prior to surgery.

How will Respiratory function tests help me?

Through the assessment of lung volumes, rates of flow, capacities, and gas exchange, RFTs provide useful information for doctors which can:

  • Help diagnose suspected lung disease
  • Help work out how severe a condition is
  • Help in planning and monitoring the response to treatment

What does testing involve?

Patients will need to sit unaided in a chamber for the procedure, and will be given a nose clip to wear to ensure breathing is restricted to the mouth only. You will be asked to breathe through a mouthpiece and perform various breathing exercises. Depending on the tests requested, you will be required to inhale and exhale at various speeds and strengths. While this is not usually uncomfortable, you may exert yourself, become tired and or light-headed.

You should be aware that the amount of effort you put in can influence the accuracy of your lung function tests. All the tests are repeated several times to confirm the accuracy of the results.

Is there anything I need to do before a lung function test?

No special preparation is needed before the test, although you may be asked to not use your inhalers or puffers for a specific time prior to the testing. If inhaler use is unavoidable, the technician should be informed of dosage and time of use prior to beginning the test.