DIRECT RENIN

The direct renin test measures the level of renin, an enzyme produced by the kidneys, in the blood. Renin plays a crucial role in regulating blood pressure and fluid balance by initiating the renin-angiotensin-aldosterone system (RAAS). This test is used to diagnose and monitor conditions affecting blood pressure and electrolyte balance, such as hypertension, primary aldosteronism, and renal artery stenosis. Elevated renin levels can indicate renal artery stenosis or malignant hypertension, while low levels can suggest primary aldosteronism. The direct renin test provides valuable information for managing blood pressure and guiding treatment decisions.