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Alternative namesDelta-aminolevulinic acid
DefinitionThis test is designed to measure the amount of delta-ALA in urine.
How the test is performedThe health care provider will instruct you, if necessary, to discontinue drugs that may interfere with the test. A 24-hour urine sample is needed.
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. Drain the urine into the container for transport to the laboratory. As with adults, the container must be kept refrigerated.
How to prepare for the testNo 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 feelThe test involves only normal urination and there is no discomfort.
Why the test is performed
This test is useful in detecting the amount of Delta-ALA in the urine.
Normal Values1 to 7 mg per 24-hours
Note: mg = milligrams
What abnormal results meanIncreased levels of urinary delta-ALA may indicate:
What the risks areThere are no risks.
Special considerationsDrugs that may interfere with test measurements include penicillin, barbiturates, oral contraceptives, and griseofulvin, an anti-fungal medication.
Update Date: 9/3/2003Michael C. Milone, M.D., Ph.D., Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT