My wife just received a call from our Doctor saying our 8 year old son has to go for a sweat test to check for Cystic Fibrosis. His symptoms are: Recurrent chest infection with green mucus being coughed up, maybe only a spoonful, he has taken antibiotics which help for a short while then it flares up again. hey reckon he had pneumonia last winter. Asthma type symptoms which an inhaler controls, but this is infrequent, maybe once every 2 months recently been a bit sweaty but not much If this is the wrong place i apologise but iam away from home and worried sick. The more i read the internet the more it looks like it but i know a little knowledge is a dangerous thing.Thanks for your help.