I certainly believe it is the parents right to know. Especially since you need to inform them if they are a carrier or not so when they get older and get married, they make sure to get their spouse tested. If they find they are both carriers, there are other methods of pregnancy they can pursue to ensure their child will not have CF. I don't think you should leave a child in the dark, even about being "just a carrier". It will play an important part in their lives. Just my thoughts though,
Julie (wife to Mark 24 w/CF)