Hi, I posted a couple of weeks about my 12 y.o. son. Well, since then he has had an Upper G.I, blood test and a sweat test. Endoscopy/Colonoscopy will be at the end of September. The specialist wanted the Upper G.I due to his acid reflux and abdominal pain...it did show alot of reflux in his esophagus. Blood work was for Celiac disease...negative, Sweat tesst...negative. I will consult with her about the Ambry. I guess we will just have to "rule" out diseases for the time being. He continues to take Miralax for constipation, and Prevacid for reflux. What lead the specialist to wonder if it was CF was his history with pneumonia, constipation and as of now his stature and body weight. He has not had pneumonia in five years...knock on wood! If anyone has a similiar story or friendly advice, please write!! Thank you.