Captopril challenge test
Non-invasive medical test / From Wikipedia, the free encyclopedia
The captopril challenge test (CCT) is a non-invasive medical test that measures the change in renin plasma-levels in response to administration of captopril, an angiotensin converting enzyme inhibitor. It is used to assist in the diagnosis of renal artery stenosis. It is not generally considered a useful test for children,[1] and more suitable options are available for adult cases.