If the sweat test came back fairly quickly then it was not the expanded Ambry test that tests for all currently known mutations. The Ambry test takes 4-6 weeks to come back.Is your daughter being tested by an CF Clinic or just through a Pulmo, Ped or GI doc? The reason I ask is that CF is amazingly complicated and the typical doctor that does not specialize in CF would not be the person to diagnosis CF unless it was a textbook case (diagnosed shortly after birth). If you are not currently going to a CF Clinic I would get there ASAP so they can evauluate the test results.