The urine is drained into the container for transport to the laboratory. Deliver it to the laboratory or your health care provider as soon as possible upon completion. No special preparation is necessary for this test, but if the collection is being taken from an infant, a couple of extra collection bags may be necessary. How the Test will Feel This test involves only normal urination and there is no discomfort. Aldosterone is a steroid hormone that plays a major role in regulating potassium levels within the body.
Aldosterone increases the loss of potassium in the kidneys.