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Tips for Preparing and Getting Accurate PFT Results

Pulmonary Function Tests (PFTs) are crucial diagnostic tools used to assess lung function and detect respiratory issues.

Pulmonary Function Tests (PFTs) are crucial diagnostic tools used to assess lung function and detect respiratory issues. Achieving accurate results is essential for an effective evaluation of your respiratory health. In this guide, we'll explore practical advice on how to prepare for PFTs, including lifestyle adjustments and mental preparation. 

Understanding the Importance of Preparation 

Preparing for a PFT goes beyond merely showing up at the testing facility. Proper preparation enhances the accuracy of the results, providing healthcare professionals with valuable insights into your lung function and overall respiratory health. 

PFT Preparation Tips  

1. Maintain a Healthy Lifestyle: 

Engage in regular physical activity to keep your lungs healthy. Incorporate aerobic exercises and breathing exercises into your routine, as these can positively impact your respiratory function. 

2. Stay Hydrated: 

Adequate hydration is essential for optimal lung function. Drink plenty of water in the days leading up to the test to ensure your body is well-hydrated. 

3. Avoid Heavy Meals: 

Refrain from consuming heavy or large meals before the test. A full stomach can exert pressure on your diaphragm, potentially affecting your breathing during the test. 

4. Limit Caffeine Intake:  

Caffeine can act as a bronchodilator, potentially influencing the test results. Avoid consuming caffeinated beverages, such as coffee or energy drinks, for at least four hours before the test. 

5. Avoid Smoking: 

Smoking can significantly impact lung function. Refrain from smoking for at least four hours before the test to ensure accurate and representative results. 

6. Relaxation Techniques: 

Practice relaxation techniques, such as deep breathing and meditation, to help keep anxiety at bay. A calm state of mind contributes to more accurate and reliable test results. 

7. Understand the Process:  

Familiarize yourself with the PFT procedure. Knowing what to expect can reduce anxiety and help you cooperate better during the test, leading to more accurate results. 

8. Follow Specific Instructions: 

If you use bronchodilators or inhaler medication, you may receive specific instructions regarding their use before the test. Follow these instructions diligently to ensure accurate and unaltered results. 

Additional Tips for Test Day 

On the day of the test, arrive on time, wear comfortable clothing, and be prepared to follow any additional instructions provided by the healthcare professional administering the PFT. 


Remember, accurate PFT results contribute to a more precise diagnosis and an effective plan for managing respiratory health. By incorporating these tips into your preparation routine, you can optimize the accuracy of your PFT results and gain valuable insights into your lung function. 


At the Advanced Respiratory Care Network, we perform lung testing at our Edmonton, Sherwood Park, Spruce Grove, Red Deer, Calgary, and Camrose locations. Visit our website to find out more information about our pulmonary function testing services and contact us to get started!  



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