What does it measure?

What does spirometry measure?
What does Spirometry Measure

Spirometry tells your doctor if your lungs are functioning normally. It does this through different breathing measurements, some of the most common measurements include:

Forced Vital Capacity (FVC) – The largest amount of air that you can blow out after you take your biggest breath in.

Forced Expiratory Volume (FEV1) – The amount of air you can blow out of your lungs in the first second.

If the amount of air you blow out in the first second is low, you might have a lung disease such as asthma or COPD.

If the amount of air you blow out in the first second is low, you might have a lung disease such as asthma or COPD.

If you have already been diagnosed with asthma or COPD, spirometry can be useful to determine if your current treatment is working.