The Aldosterone Blood Test is a diagnostic tool used to measure the amount of aldosterone in the blood. Aldosterone is a hormone secreted by the adrenal glands that plays a key role in regulating blood pressure and maintaining the balance of sodium and potassium in the body. This test is often performed to evaluate unexplained high blood pressure, particularly if it is difficult to control or occurs at a young age. It can also help diagnose disorders such as primary aldosteronism (Conn’s syndrome), adrenal gland hyperplasia, or adrenal tumors. In some cases, it may be used to investigate electrolyte imbalances that could lead to symptoms like muscle weakness, fatigue, or irregular heartbeat. Results from this test aid healthcare providers in determining the appropriate course of treatment or further investigation.