PFT

Pulmonary Function Test (PFT): Breathing Made Clear

Breathing is something we like to take for granted—until it becomes difficult. Whether you have shortness of breath, chronic cough, or a history of lung disease, a Pulmonary Function Test (PFT) is a significant diagnostic test that enables doctors to assess how well your lungs work.

PFTs are nonpainful tests that examine how efficiently your lungs exchange air in and out, and how efficiently they oxygenate the rest of your body. PFTs play a key role in diagnosing and treating a number of breathing disorders, ranging from asthma to COPD.

What is a Pulmonary Function Test?

A Pulmonary Function Test, or PFT, is a series of breathing tests that measure lung function. It measures lung volume, capacity, flow rates, and the effectiveness of gas exchange. PFTs help doctors determine whether your lungs work well or if there is a blockage or a restriction hindering your breathing.

 

A PFT is essential for those who:

  • Experience shortness of breath more than twice a week
  • Have a chronic cough or wheezing
  • Smoke or have history of smoking
  • Family history of lung disease
  • Require pre-operative lung testing
  • Exposure to dust, chemicals, or pollution in the work setting

Types of Tests in a PFT

  • Spirometry

Measures the capacity of air you can breathe in and out and the speed at which you can exhale air. It is the most common PFT and is employed to detect asthma, COPD, and other obstructive lung diseases.

  • Lung Volume Measurement

Estimates the total volume of air your lungs can accommodate. It detects restrictive lung disorders like pulmonary fibrosis.

  • Diffusion Capacity Test (DLCO)

Tests how well oxygen travels from your lungs to your bloodstream. It’s helpful in measuring diseases that involve lung tissues or blood vessels.

What to Do During the Test

A PFT is a safe, easy test that normally takes 30 to 60 minutes. This is what typically occurs:

  • You will be asked to sit comfortably and use a nose clip to limit air leak.
  • A technician will guide you through breathing into a special mouthpiece connected to a machine.
  • You may be requested to breathe deeply, blow out forcefully, or hold your breath for a few seconds—depending on the nature of the test.

In some cases, the doctor will ask you to repeat the test after you have taken a bronchodilator (a medication that opens up the airways) to see how your lungs respond to treatment.

 

Benefits of Pulmonary Function Testing

  • Pulmonary fibrosis
  • Chronic bronchitis
  • Emphysema
  • Interstitial lung disease
  • Early Diagnosis
  • Helps identify respiratory illness before symptoms worsen.
  • Treatment Planning
  • Assists doctors in choosing the most suitable therapy and medicine based on your lung function.
  • Monitoring Progress
  • Tracks how well your lungs are responding to treatment over time.
  • Safe and Non-Invasive
  • No radiation, no needles—only relaxing breathing tests.
  • Pre-Surgical Evaluation
  • Ensures your lungs are sufficiently healthy for surgery, especially in patients with underlying lung disease.
  • Conditions Detected by PFT
  • PFTs are used regularly to diagnose and treat:
  • Asthma
  • COPD (Chronic Obstructive Pulmonary Disease)
  • Allergic airway diseases
  • Lung involvement in autoimmune diseases

Conclusion

If you suddenly and unexpectedly experience breathing problems or have a condition for which you have been diagnosed with a lung disease, a Pulmonary Function Test can help illuminate your knowledge of your respiratory system. We offers comprehensive PFT testing with the latest equipment so that you can feel better and live better.