__NOTOC__ The<unk>  (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, and more suitable options are available for adult cases. __TOC__
Captopril challenge test
Captopril suppression test
Aldosterone-to-renin ratio
Fractional flow reserve
Plasma renin activity
Cold pressor test
Electrocochleography
Glucose clamp technique