My daughter, who is 7, had her gall bladder out in October. She was 6 then. In the hospital they administered a sweat test among many other tests. The results were a 48. Several weeks later they gave her another sweat test, and the results were 55. So in January her blood was sent to Johns Hopkins for genetic mutation analysis. Today the results came back: no genetic markers for CF.
I asked the nurse if that means she definitively does NOT have CF, and she said no, but probably. They're still concerned about the sweat test numbers.
I'm confused. I've been researching a bit, but can't seem to find a real answer.