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Definition Return to top
This is a test to detect small quantities of urine albumin.How the test is performed Return to top
A 24-hour urine sample is needed. The health care provider will instruct you, if necessary, to discontinue drugs that may interfere with the test.For an infant, thoroughly wash the area around the urethra. Open a urine collection bag (a plastic bag with an adhesive paper on one end), and place it on your infant. For boys, the entire penis can be placed in the bag and the adhesive attached to the skin. For girls, the bag is placed over the labia. Place a diaper over the infant (bag and all).
The infant should be checked frequently and the bag changed after the infant has urinated into the bag. For active infants, this procedure may take a couple of attempts--lively infants can displace the bag, making it difficult to obtain the specimen. 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.
How to prepare for the test Return to top
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 Return to top
The test involves only normal urination, there is no discomfort.Why the test is performed Return to top
The main reason for performing the test is early detection of diabetic nephropathy in a patient who has had diabetes for several years.
Normally, most protein stays in the body, and little or no protein appears in the urine. (Normally, less than 150 mg of small proteins per day is excreted in urine. About one-third of this protein is albumin.)
Normal Values Return to top
Normally, there is less than 43 milligrams per day of albumin in urine.
What abnormal results mean Return to top
If the level of proteins in the urine is too high, this indicates a problem with kidney function. Albuminuria is when albumin is too high in the urine. It is a typical finding of disorders such as diabetic nephropathy. The beginning of this condition is called microalbuminuria.
What the risks are Return to top
There are no risks.Special considerations Return to top
Healthy people may exceed normal levels after strenuous exercise or with dehydration. Update Date: 2/9/2004 Updated by: Frank A. Greco, M.D., Ph.D., Director, Biophysical Laboratory, The Lahey Clinic, Burlington, MA. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |