Aldosterone in Blood

What To Think About

• The kidney hormone renin normally controls how much aldosterone is released by the adrenal glands. Usually a renin activity test is done when the aldosterone level is measured. For more information, see the medical test Renin.
• A 24-hour urine test may be done instead if your doctor does not want changes in your position or the time of day to change test results. For more information, see the medical test Aldosterone in Urine.
• If you may have overactive adrenal glands or an abnormal adrenal growth, potassium levels may also be tested. For more information, see the medical test Potassium (K) in Blood.

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Author:	Jan Nissl, RN, BS	Last Updated: August 21, 2006
Medical Review:	Caroline S. Rhoads, MD - Internal Medicine Alan C. Dalkin, MD - Endocrinology
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