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To see if your aldosterone or renin levels are abnormal; to detect hyperaldosteronism (overproduction of aldosterone) or hypoaldosteronism (underproduction of aldosterone).
If your doctor finds an electrolyte imbalance or you develop symptoms of hyperaldosteronism, such as high blood pressure or muscle weakness.
A blood sample taken from a vein in your arm or a 24-hour urine sample.
You may be asked to adhere to an unrestricted salt diet prior to the test or to temporarily discontinue one or more medications. Follow any instructions given to ensure the validity of test results.
Aldosterone is a hormone that regulates the retention of sodium (salt) and water by the kidney and also controls the removal of potassium. It plays a crucial role in blood pressure control. Aldosterone is produced by the adrenal glands, stimulated by hormones like renin and angiotensin II.
A blood sample is required for measuring plasma aldosterone and/or renin levels, taken from a vein in the arm. Samples may be collected in different postures, such as lying down and standing, to observe changes.
You may be asked to adhere to an unrestricted salt diet prior to the test or to temporarily discontinue one or more medications. This is crucial to ensure the validity of test results.
Aldosterone and renin tests are usually requested together. High blood pressure along with low potassium usually leads to these tests. The results, along with cortisol levels, provide information about hormone disorders associated with the adrenal glands and kidneys.
These tests are requested when high blood pressure and low potassium concentrations are observed. They may be used to point to likely treatments for individuals with high blood pressure.
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