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Alternative Names Return to topAMP; Dermatan sulfate - urine; Urine heparan sulfate; Urine dermatan sulfate; Heparan sulfate - urine
Definition Return to top
Acid mucopolysaccharides is a test that measures the amount of mucopolysaccharides released into the urine over a 24-hour period. Mucopolysaccharides are long chains of sugar molecules found throughout the body, often in mucus and in fluid around the joints.
How the Test is Performed Return to top
A 24-hour urine sample is needed.
How to Prepare for the Test Return to top
There is no special preparation needed.
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
This test is done to diagnose a rare group of genetic disorders called mucopolysaccharidoses, including Hurler syndrome.
This test is usually only done in infants who have a family history of one of these disorders.
Normal Results Return to top
Normal levels vary with age and from lab to lab.
What Abnormal Results Mean Return to top
Abnormally high levels are a sign of mucopolysaccharidosis. Further tests are needed to determine the specific type of mucopolysaccharidosis.Update Date: 5/20/2009 Updated by: Frank A. Greco, M.D., Ph.D., Director, Biophysical Laboratory, The Lahey Clinic, Burlington, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.