I am 38 and had a sweat test in 1970. Needless to say, those results are long gone. I know it seems kind of strange to have to get a diagnosis after all of these years but I need to have two done to participate in the Aztreanam expanded access program. Insurance may not cover it because I am already being treated for CF. Do any of you newcomers have an idea of what I might have to spend since insurance may not cover it. Also, besides drinking a lot of water, are there other good ways to assure a "good test". Thanks for your replys.