Guest guest Posted February 27, 2004 Report Share Posted February 27, 2004 Hello to everyone, i am new here and have a few questions. I have three chldren, two I believe are affected. My son who has chronic sinusitis, lung infections, malabsorption ( takes Creon 20 ) just had a sweat chloride test, the doctor called and said it was positive for CF with a level of 80. My question is this, he wants him to have the genetic testing, can you have a positive sweat test and a diagnosis of CF but not have any of the genes for CF. I read somewhere that they can only test for 25 of the 1,000 mutations. The reason I ask is I was told my kids had CF when they were toddlers, then the geneticist dod gene testing on my daughter and the report said she had none of the known mutations so we were told no it is not CF. However at the bottom of the report it said not all genes can be tested for and this test cannot rule out CF in a small percentage of patients. Does anyone else have a positive sweat chloride but no known mutation? Sorry for so many questions... Quote Link to comment Share on other sites More sharing options...
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