Prenatal ultrasound. Today, CF can be diagnosed before symptoms develop either by prenatal or newborn screening.
An array of tests, from genetic mutation analysis of the CF gene to chest and sinus CTs to infant pulmonary function tests are a part of the diagnostic arsenal of physicians. However the sweat test remains the "gold standard" for the diagnosis of CF. Today, physicians can detect CF not only in newborns but in the developing fetus as well.
