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Citric acid urine test
Alternative namesUrine - citric acid test
DefinitionThis is a test to measure the amount of citric acid in urine.
How the test is performedA 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.
How to prepare for the testNo 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 feelThe test involves only normal urination, and there is no discomfort.
Why the test is performedThe test is used to diagnose renal tubular acidosis and evaluate kidney stone disease.
Normal ValuesThe normal range is 320-1240 milligrams per 24 hours
What abnormal results mean
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 areThere are no risks.
Update Date: 2/9/2004Frank A. Greco, M.D., Ph.D., Director, Biophysical Laboratory, The Lahey Clinic, Burlington, MA. Review provided by VeriMed Healthcare Network.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT