From what I understand this looks like 0%. I would be relying on all my other records and dr statements because this PFT Looks fine. Which is good , that means my asthma is still manageable and there is hope. FEV1 actual- 3.95 pred- 2.90 % pred- 136 Fev1 Post inhaler- actual-3.37 % pred- 120 %change- 6 DLCO ACTUAL-20.8 pred- 24.0 %pred-87 FEV1/FVC actual-81 pred-87 After inhaler actual-84