what technology do doctors use to diagnose CF
If a genetic test or blood test suggests CF, a doctor will confirm the diagnosis using a sweat test. This test is the most useful test for diagnosing CF. A sweat test measures the amount of salt in sweat.For this test, the doctor triggers sweating on a small patch of skin on an arm or leg. Genetic tests to find out what type of CFTR defect is causing your CF. 2  A chest x ray. 3  This test creates pictures of the structures in your chest, such as your heart, lungs, and blood vessels. 4  A chest x ray can show whether your lungs are inflamed or scarred, or whether they trap air.