Spirometry testing done?

pred means predicted, the results you got are compared to what they would expect for someone your height and weight and I would ume gender. Looking at the percentages of the predictions I would guess that your lungs aren't working at anywhere near capacity due to uncontrolled asthma or another medical condition affecting your lungs. Your doctor will give you advice on what to do to hopefully improve these figures. Good luck, see the doctor as soon as possible for his advice.