Pulmonary Function Test (Spirometry)
Also known as: PFT, Lung Function Test
Category: RespiratorySample: Breathing TestReport in: Same Day
Measures how much and how fast you can breathe out, to diagnose asthma and COPD.
Why it's done
- Diagnose asthma and COPD
- Occupational lung screening
What it measures
FEV1, FVC and their ratio.
Preparation
Avoid inhalers and smoking before the test as advised.
Normal range
FEV1/FVC above about 0.70 and FEV1 above 80 percent predicted
Understanding results
Low ratio suggests airway obstruction.
Frequently asked questions
Why is the Pulmonary Function Test (Spirometry) test done?
Diagnose asthma and COPD, Occupational lung screening
How do I prepare for Pulmonary Function Test (Spirometry)?
Avoid inhalers and smoking before the test as advised.
What is the normal range for Pulmonary Function Test (Spirometry)?
FEV1/FVC above about 0.70 and FEV1 above 80 percent predicted
Medically reviewed by
Medical review pending
Last updated
9 October 2026
Sources
- ICMR standard treatment workflows
- Reference ranges vary by laboratory - always read your report with your doctor
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.