my daughters test was positive and they ran a second to be positive cause it is a disease and they want to make sure it is true. is he going to an acredited cf center?
Hello Ducky and welcome to HW!
about the sweat tests (in my experience), two tests on different days are usually required in determining a diagnosis. What I have been told is that there can be a false negative (ex. a negative result on a sweat test but two cf mutations found in dna), but never a false positive (ex. once tested positive on a sweat test, the diagnosis is almost always positive for CF).
I don't believe that club feet is indictive of CF, I think what you are refering to is clubbing of the nail beds on the hands and feet.
Keep us posted on how your nephew does and hope you all find some answers.