Aldosterone 24 Hour Urine Test
Test Code: 004291
Specimen Type: Urine
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Description:
Aldosterone 24 Hour Urine Test (Labcorp)
This test measures Aldosterone levels in a 24-hour urine sample. Aldosterone is a hormone produced by the adrenal glands which help to regulate the levels of sodium and potassium in the blood as well as controlling blood pressure and volume. A condition known as Primary Aldosteronism or Conn Syndrome causes the adrenal glands to produce excess aldosterone which causes the body to retain excess sodium and lose potassium resulting in high blood pressure. Because blood Aldosterone levels fluctuate throughout the day, a urine test can sometimes be more informative than a blood test since it looks at the average level of aldosterone being excreted over a 24-hour period.
An Aldosterone test is typically ordered to help diagnose the cause of high blood pressure, especially if a person is not responding to blood pressure medication or has low potassium levels. Blood testing for Aldosterone and Aldosterone/Renin Ratio are also available.
Turnaround for the Aldosterone 24 hour urine test is typically 6-10 business days.
Where can I find a Aldosterone 24 Hour Urine Test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Requirements:
If the donor is taking diuretics, antihypertensive drugs, cyclic progestational agents, estrogen, or licorice, results for aldosterone may not be interpretable. Donors should be on a diet containing 135 mmol (3 g) sodium per day for at least two weeks and preferably 30 days prior to testing.
For 24-hour urine specimen: Obtain a specimen container and instructions from the draw site. Void at 8 AM and discard the specimen. Then collect all urine including the final void at the end of the 24-hour collection period (ie, 8 AM the next morning) in the specimen container. Screw the lid on securely and return the container promptly to the draw site.
If this test is being ordered along with any other blood and/or urine medical testing, it is recommended you have the specimen(s) for your other tests collected at the same time you bring the 24-hour urine specimen to the draw site.
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