Aldosterone/Renin

This test measures the ratio of aldosterone to renin, two hormones that regulate blood pressure and electrolyte balance. Aldosterone is produced by the adrenal glands, while renin is produced by the kidneys. An elevated aldosterone-to-renin ratio suggests primary hyperaldosteronism, a condition causing high blood pressure and potassium loss. This test is typically performed when someone has hypertension resistant to medication or unexplained low potassium. Identifying hyperaldosteronism is important because it requires specific treatment approaches.