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Originally Posted by jkohlijr1  My 4 year old grandson was just tested with the sweat test at Phoenix Children's Hospital and the results were 107...which resulted in Cystic Fibrosis. |
0-40 is considered normal, 40-60 borderline and 60-100+ is considered positive for CF. The problem is that while a high number is a definate for CF, it's doesn't necessarily mean that a lower number isn't CF. My child is a prime example -- he had a normal 32 at an accreditted CF facility, yet genetic blood testing revealed CF. There are over 1500 genetic mutations for cf and the basic blood tests only cover a small percentage of those 35-80.