When I calculate my peak flow in morning it was around 450 after taking 2 puff of duolin my peakflow increases to 600. Is it asthma. Done with cxr and CT it is normal but pft results shows early small airway obstruction as pef 25-75% or pefr %pred<70. Mild obstruction as fev1fvc <95 and fvc pred >80. Please help
Spirometry and pulmonary function tests are advised to the patient.