State-of-the-art lung function assessment using gold-standard techniques — providing the most accurate and complete picture of your respiratory health to guide precise diagnosis and treatment.
Pulmonary function tests (PFTs) are a family of non-invasive assessments that measure how well your lungs work — including how much air you can inhale and exhale, how quickly you can move air, and how efficiently your lungs transfer oxygen into the bloodstream.
Our on-site pulmonary function laboratory performs the complete spectrum of testing: from routine spirometry to full body plethysmography, diffusion capacity (DLCO), cardiopulmonary exercise testing (CPET), and fractional exhaled nitric oxide (FeNO) measurement. All tests are performed by AMS-accredited respiratory scientists and interpreted by our specialist pulmonologists.
"Accurate lung function measurement is the foundation of all respiratory diagnosis. Without it, treatment decisions are made in the dark. Our laboratory ensures every patient receives a precise, reproducible assessment."
Results are reported same-day wherever possible, with a specialist consultation to interpret your results and guide next steps.
Comprehensive testing options to diagnose, stage, and monitor a wide range of respiratory conditions.
Spirometry — measures FEV1, FVC, and flow-volume curves
Bronchodilator Reversibility Testing — assesses asthma vs COPD
DLCO (Diffusion Capacity) — measures gas transfer across the lung membrane
Body Plethysmography — total lung capacity, residual volume, and airway resistance
FeNO (Fractional Exhaled Nitric Oxide) — measures eosinophilic airway inflammation
CPET (Cardiopulmonary Exercise Testing) — full gas exchange analysis during exercise
Bronchial Challenge Testing — methacholine or mannitol for airway hyper-responsiveness
6-Minute Walk Test — functional exercise capacity and desaturation assessment
All tests are painless and non-invasive. Here is what happens on the day of your pulmonary function testing appointment.
Avoid bronchodilators, caffeine, and vigorous exercise before testing as instructed. Wear comfortable clothing. Allow 45–90 minutes depending on your test combination.
Our accredited scientists explain each test, ensure correct technique, and coach you through the breathing manoeuvres for reproducible, quality results.
Each test is performed to ATS/ERS quality standards. The scientist assesses reproducibility in real time and repeats manoeuvres as needed to ensure accurate results.
Your pulmonologist reviews and interprets all results in the context of your clinical history, and explains exactly what the findings mean for your diagnosis and management plan.
Pulmonary function testing is the cornerstone for diagnosing, staging, and monitoring virtually every chronic respiratory disease. It is also used for pre-operative risk assessment and disability evaluation.
Book Your TestingSpirometry and bronchodilator reversibility confirm asthma diagnosis; FeNO and bronchial challenge testing identify inflammation type and airway hyper-responsiveness.
Post-bronchodilator spirometry defines obstruction severity (GOLD stage); body plethysmography quantifies hyperinflation and air trapping; DLCO reflects emphysema burden.
DLCO and total lung capacity (TLC) identify restrictive patterns in pulmonary fibrosis, sarcoidosis, and connective tissue disease-associated ILD, guiding therapy decisions.
CPET distinguishes cardiac from pulmonary causes of breathlessness, identifies exercise-induced bronchospasm, and provides objective exercise capacity for disability assessment.
Spirometry and DLCO are required before thoracic surgery, lung resection, and cardiac surgery to assess surgical risk and predict post-operative lung function.
Preparation depends on which tests are requested. Generally: avoid short-acting bronchodilators 4–6 hours before, long-acting bronchodilators 12–24 hours before, caffeine 4 hours before, and heavy meals immediately before. Avoid vigorous exercise on the morning of the test. Our team will send you specific instructions with your appointment confirmation.
PFTs are entirely non-invasive and generally well-tolerated. Spirometry requires forceful breathing manoeuvres that can feel tiring or cause brief light-headedness. Body plethysmography involves sitting in a sealed glass booth — patients with claustrophobia should let us know. FeNO is simply a slow, steady exhalation and takes under 2 minutes.
An obstructive pattern (reduced FEV1/FVC ratio) indicates narrowed airways, as seen in asthma and COPD. A restrictive pattern (reduced TLC with normal FEV1/FVC) indicates the lungs are smaller than expected — seen in pulmonary fibrosis, neuromuscular disease, or chest wall problems. Your pulmonologist will explain exactly what your pattern means.
A standard spirometry test takes approximately 20–30 minutes. A full battery including spirometry, DLCO, body plethysmography, and FeNO typically takes 60–90 minutes. CPET is a separate appointment and takes approximately 2 hours including setup, the 10-minute exercise protocol, and recovery monitoring.
The respiratory scientist will review quality and print your flow-volume curves on the day. Formal specialist interpretation and a report is typically available same-day or within 24 hours. For patients attending a combined clinic and testing appointment, results are discussed on the same visit.
Book your pulmonary function assessment with our accredited laboratory today. Specialist-interpreted results, same-day reporting.