<<Disclaimer: Verify this information before applying it to your situation.>> With my son, diagnosed 1.5 yrs ago, he had the Cystic Fibrosis "sweat test" done to rule out CF prior to his biopsy to confirm Celiac. The doctor said that this is done since the symptoms are very similar but that since Cody had not had any respiratory problems he was not likely to have CF. Karen, Edmonton, Alberta, Canada [log in to unmask]