How Do You Read Pft

You will also see another number on the spirometry test results — the FEV1/ FVC ratio. This number represents the percent of the lung size (FVC) that can be exhaled in one second. For example, if the FEV1 is 4 and the FVC is 5, then the FEV1/ FVC ratio would be 4/5 or 80%.

How do you read a PFT result?

You will also see another number on the spirometry test results — the FEV1/ FVC ratio. This number represents the percent of the lung size (FVC) that can be exhaled in one second. For example, if the FEV1 is 4 and the FVC is 5, then the FEV1/ FVC ratio would be 4/5 or 80%.

What are normal PFT results?

Pulmonary function testNormal value (95 percent confidence interval)TLC80% to 120%FRC75% to 120%RV75% to 120%DLCO> 60% to < 120%