Anyone have low numbers on sweat test and then show postive for CF w/genetic testing? What's the lowest you have any knowledge of ? My baby has all classic symptoms, but mucous in her chest did not culture any bacteria and her sweats were LOW 7 & 8- Pulmo doc.won't run full Ambry- They are sending me next after the GI Doc, to an Immunologist thinking it's maybe auto-immune,then to a neurologist-baby stilll sick- EVERY morning 2 brthng.treatmnts. to open lungs and for her to cough 3-4 hours to clear mucous out-been doing this literally every day since May and in hospital because she can't breathe on her own and they just don't know why-chronic head congestion, has lost weight, oily, foul, and now mucous filled stools. Anybody got some low numbers on sweat test?