Diagnosis
If a doctor suspects that someone has cystic fibrosis, he or she will carry out special tests.
A "sweat test" is often performed, in which a small area of the skin is stimulated with local heat or medication. If the sweat contains more salt than normal, it supports a diagnosis of CF. A test for the presence of enzymes in the intestine may also be performed.
The physician will often discuss the history of the patients’ digestive and breathing difficulties, infections and failure to gain weight. A chest X-ray is often taken to learn whether there have been any changes in the lungs.
Genetic testing, based on a blood sample can confirm the diagnosis.
