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Pulmonary Function Testing Centre

Precision diagnostics. Integrated care. Better breathing. 

Our Mission:

 

To deliver high-quality, standardized pulmonary diagnostics integrated with the Mississauga Lung Health Centre and local community healthcare partners, enabling timely diagnosis, coordinated care, and improved respiratory health outcomes across our region. 

Breathing Tests

Spirometry

Spirometry measures:

  • How much air you can breathe out

  • How fast you can breathe out

These measurements help us understand whether your airways are normal, narrowed, or obstructed. In some cases, the test is repeated after using a bronchodilator (inhaler) to determine whether airflow improves, which helps guide diagnosis and treatment decisions.

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Diffusion Capacity

Diffusion capacity testing measures how efficiently oxygen moves from the lungs into the bloodstream.
It helps assess the health of the lung tissue and pulmonary blood vessels, and is commonly used to evaluate conditions such as interstitial lung disease, emphysema, and pulmonary vascular disease

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Lung Volume and Airway Resistance

Lung Volumes measure the total amount of air in your lungs, including air that remains after full exhalation.
They help detect restriction, air trapping, and abnormalities not seen on spirometry alone.

Airway Resistance measures how easily air flows through your airways during normal breathing.  It helps identify subtle airway narrowing and assess breathing mechanics, particularly in obstructive lung disease.

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Fractional Exhaled Nitric Oxide (FeNO)

Nitric oxide (NO) is a molecule produced by the lungs that can be measured in exhaled breath.  Biomarkers such as NO provide objective data on biologic parameters such as airway inflammation and disease activity. This can improve the understanding of asthma and lead to better patient outcomes.

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Integrated Cardiopulmonary Exercise Test (coming soon)

Integrated CPT evaluates how the heart, lungs, and muscles work together during exercise.  By measuring breathing, oxygen use, heart response, and circulation at the same time, it helps identify the cause of unexplained shortness of breath, exercise limitation, or reduced fitness. This integrated approach provides a more complete assessment than cardiac or pulmonary testing alone and supports more precise diagnosis and care planning.

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One Breath is operated by MetroWest Pulmonary Diagnostics Inc., a licensed Integrated Community Health Services Centre.  License # 9062513.  Est. 2025.

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One Breath: Pulmonary Diagnostics works in affiliation with the Mississauga Lung Health Centre (MLHC) but is independently managed. We provide diagnostic testing for patients throughout the community, not just those followed at MLHC.

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