I'm having difficulties pursuing a diagnosis for CF or any diagnosis in general and was hoping to get some input.<br><br>I'm 21 and have had a lot of stomach problems over the last year, came out pancreas insufficient which im now on creon for and also had some low lung capacity readings as well. <br> <br>When I got a sweat test I came out borderline at 52 which prompted the docter do a DNA screening for CF, after waiting several months it came back saying they found one mutation but only the one. I know they screened for something like the 10 most common mutations first then put me through a second screen which tested for another 30 of the rarer mutations. <br><br>Is this enough to rule out CF completely? Im not sure if I should continue going down this road and looking for a CF diagnosis but doctors cant explain any of the underlying causes for my symptoms and it seems the closest fit. Would it be worth doing a second sweat test perhaps?<br><br>Any input would be appreciated.<br>Cheers.<br>