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Alternative names Return to top
Urine - citric acid testDefinition Return to top
This is a test to measure the amount of citric acid in urine.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 males, the entire penis can be placed in the bag and the adhesive attached to the skin. For females, 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, causing an inability 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.
The laboratory analyzes the specimen for the amount of citric acid present.
How to prepare for the test Return to top
No special preparation is necessary for this test. However, the results are influenced by your diet, and this test is typically performed while you are eating regularly. Consult your physician or health care provider for more information. 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, and there is no discomfort.Why the test is performed Return to top
The test is used to diagnose renal tubular acidosis and evaluate kidney stone disease.Normal Values Return to top
The normal range is 320-1240 milligrams per 24 hoursWhat abnormal results mean Return to top
A below-normal result indicates possible renal tubular acidosis and a tendency to form calcium stones.
Urine citric acid levels may also be decreased with:
Urine citric acid levels may be increased with:
What the risks are Return to top
There are no risks. 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 |