With at least two gene specific CF drugs an argument for normally denied genetic testing could be made. Kalydeco, now on the market treats one specific mutation and acts as a CF moderator in some mutation groups. NJH is running a trial that could impact two thirds of CF patients so there is good reason to have genetic testing.
With "mild" CF presentation chances are very good that genetic drugs will not transform your life, just yet. Until Kalydeco became available, genetic testing was mostly fashion. Totally cool, CF is a monogenetic disease and it could be genetically confirmed. The funny part is genetics doesn't guarantee the disease. A person can be genetically confirmed with CF and have no CF presentation or a desparate presentation. With the drugs still showing rapid progress, soon it will be cheaper and better for everybody but for now conventional treatment for respiratory/GI issues are the same with no influence of specific genetic knowledge.
LL