PFT Pulmonary Function Test / Spirometry Lung Function Test
Also Known As
Test Parameters Included
- Forced Vital Capacity (FVC): This is the largest amount of air that you can forcefully exhale after breathing in as deeply as possible. A lower-than-normal FVC reading indicates restricted breathing.
- Forced Expiratory Volume (FEV1): This measures how much air you can force out of your lungs in one second. This helps doctors assess the severity of any breathing problems.
- FEV1/FVC Ratio: This is a calculated percentage that helps distinguish between obstructive lung diseases (like Asthma or COPD) and restrictive lung diseases (like Pulmonary Fibrosis).
Department
Methodology
Sample Required
Preparation
Schedule Report
2 Hours
Emergency Report
Yes
Frequently Asked Questions
Why does the report take 2 hours?
The raw data is instant, but a qualified specialist must review the flow-volume loops and compare your results to "predicted" values based on your demographics.
Does the test hurt?
No, but it requires significant physical effort. You might feel briefly lightheaded or tired after blowing hard.
What is "Reversibility" testing?
Sometimes we repeat the test after giving you a puff of medicine (inhaler) to see if your lung function improves.
Can I do this if I have a cold?
It is better to wait until you are recovered, as a cold or flu can temporarily worsen your lung function results.
Why is my height and weight needed?
Predicted lung volumes are calculated based on your body size and age.
Can I wear my dentures?
Usually, yes, but if they are loose and interfere with a tight seal around the mouthpiece, you may need to remove them.
What if I can't blow hard enough?
Our technicians are trained to coach you through the process to get the most accurate result possible.
Can children take this test?
Yes, children (usually aged 5+) who can follow instructions can successfully perform spirometry.
Can PFT detect lung cancer?
It doesn't find cancer directly, but it can show the effect a tumor might have on airflow.
Should I use my regular inhaler the morning of the test?
Please check with our lab; often we ask you to hold your inhaler so we can see your "baseline" function.
Is it safe for people with heart issues?
If you have had a recent heart attack or eye surgery, please inform us, as the pressure of blowing can be a concern.
Why do I need a nose clip?
To make sure no air "leaks" out of your nose, which would make the results look worse than they are.
How many times do I have to blow?
You will usually repeat the blow at least 3 times to ensure the results are consistent and reliable.
Can I drink water before the test?
Yes, water is perfectly fine.
Is the test result confidential?
Absolutely. At Dr. Patho, your respiratory health records are kept strictly secure.
Test Description
Test Code
DPLPFT1
- High-end laboratory & medical equipment.
- Outstanding doctor team.
- Personalized care & high-quality service.
- Tailormade health screening packages.