Long story short, my son was diagnosed with chronic lung disease and restrictive airway disease. He is 2. My question is that he seen a new pediatric pulmonology doctor today that said he looked over all his charts and wants to do a CT scan and a sweat test. Is it possible to have a child with CF if I was told I didn't carry the gene?? I thought I read somewhere that both parents had to be a carrier for the child to have it. It kinda would all make sense to all his symptoms he has had since birth, but I am at a loss.