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Lab Dept:
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Urine/Stool
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Test Name:
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GAG, URINE
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General Information
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Lab Order Codes:
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UGAG
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Synonyms:
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Urinary Glycosaminoglycans; Quantitation of urinary Mucopolysaccharides
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CPT Codes:
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83864 - Mucopolysaccharides, acid; quantitative
82486- Chromatography, qualitative; column analyte not elsewhere specified
82485 – Chondroitin B sulfate, quantitative
82491 – Chromatography, quantitative, column; single analyte not elsewhere specified, single stationary and mobile phase
82664 – Electrophoretic technique, not elsewhere specified
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Test Includes:
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Quantitation of urinary mucopolysaccharides. (This provides an extensive analysis of gags and includes glycosaminoglycans – measured by uronic acid and specific assay for heparin sulfate and electrophoresis which provides separation of each of the gag components).
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Logistics
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Test Indications:
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Urine glycosaminoglycan studies may be used for the monitoring of patients who have been treated for mucopolysaccharidoses.
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Lab Testing Sections:
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Urine/Stool - Sendouts
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Referred to:
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University of Alabama, Department of Genetics, Metabolic Disease Laboratory
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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24 hours, daily
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Turnaround Time:
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Results within 1-2 weeks
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Special Instructions:
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Please submit a patient history form for each patient specimen or fax the information to (205) 975-2742.
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Specimen
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Specimen Type:
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Fresh Random Urine
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Container:
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Clean plastic container
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Draw Volume:
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20 – 50 mL
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Processed Volume:
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Same as Draw Volume
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Collection:
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Fresh random urine collection
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Special Processing:
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Lab Staff: Store urine frozen and shipped on dry ice by overnight express to the laboratory. Ship Sunday-Wednesday (with exception of holidays). Reference lab is open Monday-Thursday to receive specimens. Please submit a patient history form for each patient specimen or fax the information to (205) 975-2742.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimen
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Interpretive
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Reference Range:
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An interpretive report will be provided
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Quantization by uronic acid and N-sulfate nalysis; Qualitative analysis by electrophoresis
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References:
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University of Alabama , Metabolic Disease laboratory
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