My dd had a sweat test 2 years ago which turned out to be a borderline reading of 41. After 2 years of ongoing stomach issues and chronic cough I began some extensive research into her old records and as I did research I realized that her test fell into the borderline range and demanded that she is retested. Her levels came back borderline the second time with a 43. I am currently waiting for a pre-authorization from my insurance to do the genetic testing, but in the mean time I am researching and panicking. She also had a fecal Calprotectin test to measure inflammation in GI tract, and the results revealed an 164. Normal readings are >50. Indicative of IBD. My question is why is her CF levels borderline if she doesn't have CF? Is there something else that would cause elevated sweat chloride? Has anyone gotten borderline readings and turned out to not have CF? I am so confused, helpless, and overwhelmed.. any support and advice is VERY much welcomed!! ~Tiffany<img src="i/expressions/face-icon-small-confused.gif" border="0">