1 copy F508del mutation

So my daughter who has had some symptoms suggestive of Cf but passed the sweat test has had genetic testing done. They tested for 97 mutations and they detected 1 copy of F508del. Should I push for further genetic testing? The message the pediatrician left me made it sound as if they would not pursue it any further. Suggestions appreciated.
Source: Cystic Fibrosis DNA and Mutations Forum - Category: Respiratory Medicine Authors: Tags: DNA and Mutations Source Type: forums