You have been told that your FVC is 75% of normal, what does

Last updated: 8/8/2022

You have been told that your FVC is 75% of normal, what does that mean? 1. Its just a number the computer came up with II. Using a prediction formaula your prdicated value was calculated then the amount you were able to breath during the test for FVC was compared to it. Your value was 75% of that predicted value. III. You effort on the test was 75% IV. Your FVC was that of a a 75 year old