How PAH is diagnosed
There are tests to confirm your diagnosis of PAH and to rule out other conditions. Your healthcare provider will determine which tests are needed. Some of the tests include1:
Pulmonary function test
Right-heart catheterization (RHC)
Right-heart catheterization can provide a definitive diagnosis of PAH.2 This test involves passing a thin tube (catheter) into the right side of the heart in order to test heart function and measure blood pressure in the arteries of the lungs.