Captopril suppression test explained

Captopril suppression test
Purpose:	measures plasma levels of aldosterone.

The captopril suppression test (CST) is a non-invasive medical test that measures plasma levels of aldosterone.^[1] Aldosterone production is suppressed by captopril through the renin–angiotensin–aldosterone system. CST results are used to assist in the diagnososis of primary aldosteronism (Conn syndrome).

See also

• Captopril challenge test – used to diagnose renal artery stenosis

Notes and References

1. Agharazii M, Douville P, Grose JH, Lebel M . Captopril suppression versus salt loading in confirming primary aldosteronism . Hypertension . 37 . 6 . 1440–3 . June 2001 . 11408392 . 10.1161/01.hyp.37.6.1440. free .