my 4 yr old girl is getting a sweat chloride test because her allergies and asthma are getting difficult to control despite lots of daily meds, with symptoms pointing to CF and a desire to improve her quality of life we need to find out. Her symptoms mainly involve RESP, but include GI and ENT. If her sweat chloride results are normal, which test should we request next? should i take her to a pulmonologist or pursue genetic testing?? Advice greatly appreciated!