Spirometry
A simple breathing test that checks how well your lungs are working
If you’ve been advised to undergo a spirometry test, this page will help you understand what it is, why it’s done, and what your results can reveal about your breathing and lung health.
What is spirometry?
Spirometry is a simple breathing test that measures how much air you can breathe in and out, and how fast you can empty your lungs.
During the test, you blow into a small device called a spirometer. The machine records your breathing strength and airflow.
Spirometry helps Dr. Swapnil understand how well your lungs are functioning and whether your airways are narrowed or blocked.
It is one of the most commonly used tests to diagnose and monitor conditions like asthma, COPD, and chronic breathing problems.
In simple words: Spirometry checks how strong and healthy your lungs are by measuring your breathing.
How the spirometry test works
Deep breath in
You take the deepest breath possible
Mouthpiece placed
Your lips are sealed tightly around the spirometer tube
Blow out forcefully
You blow out as hard and fast as possible
Machine measures airflow
The spirometer records lung capacity and airflow speed
Results reviewed
Dr. Swapnil explains what the readings mean
WHY IS SPIROMETRY DONE?
recommended this test?
Shortness of breath
Persistent cough
Wheezing sounds
Asthma diagnosis
Spirometry is one of the most important tests used to diagnose asthma.
COPD assessment
Smoking-related lung damage
What to expect —
before, during & after
Before the procedure
Basic preparation
Avoid smoking, heavy meals, or strenuous exercise before the test. You may also be asked to avoid certain inhalers temporarily.
At the clinic
Instructions & demonstration
A technician or Dr. Swapnil will explain exactly how to perform the breathing test properly.
During spirometry
Breathing into the spirometer
You will take a deep breath and blow out forcefully into the machine several times to get accurate readings.
Repeat measurements
Multiple attempts for accuracy
The test may be repeated a few times to ensure the results are consistent and reliable.
Results & explanation
Understanding your lung function
Dr. Swapnil will review the results and explain whether your breathing is normal or shows signs of lung disease.
Isspirometrysafe?
Yes. Spirometry is a safe, non-invasive, and routinely performed lung function test.
- No injections or sedation are needed
- The test is painless
- You may briefly feel slightly tired or lightheaded after blowing forcefully
- The test is safe for most adults and children
- Dr. Swapnil will guide you throughout the procedure
Your doctor
Dr. Swapnil Thorve
Dr. Swapnil has performed hundreds of bronchoscopies across his 10+ years of clinical practice at LTMMC & GH Sion, Gurunanak Hospital, and other leading Mumbai hospitals. His gold medal academic training and specialisation in interventional pulmonology means every procedure is performed with the highest level of precision and care.
- DNB Pulmonary Medicine — Lilavati Hospital, Bandra
- Fellowship in Pulmonary Critical Care — LTMMC Sion
- European Diploma in Adult Respiratory Medicine — ERS
- Gold Medalist · MUHS, Maharashtra
- 20+ research articles in indexed journals
Frequently asked questions
If you have a question that isn’t answered here, WhatsApp Dr. Swapnil’s team directly — they’ll respond promptly.
No. The test is completely painless and does not involve needles or surgery.
Most spirometry tests are completed within 10 to 20 minutes.
Yes, but avoid very heavy meals before the procedure as they can make deep breathing uncomfortable.
Sometimes certain inhalers may need to be paused before the test. Dr. Swapnil’s team will guide you beforehand.
Yes. Spirometry is one of the most important tests used to diagnose asthma and monitor treatment response.
In many cases, the results are available the same day and explained during your consultation.
Ready to get started
Ready to Breath Easier?
Book a consultation with Dr. Swapnil Thorve at Sion Hospital or Gurunanak Hospital, Bandra. Same-week appointments available.