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Lab Dept:
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Urine/Stool
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Test Name:
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COPPER, TIMED URINE
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General Information
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Lab Order Codes:
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UCUQ
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Synonyms:
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Cu, Quantitative Urine
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CPT Codes:
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82525 - Copper
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Test Includes:
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Urine copper level reported in mcg/specimen.
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Logistics
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Test Indications:
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Useful for investigation of Wilson’s disease and obstructive liver disease.
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Lab Testing Sections:
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Chemistry - Sendouts
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Referred to:
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Mayo Medical Laboratories (Test: CUU/8590)
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Phone Numbers:
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MIN Lab: 612-813-6280
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STP Lab: 651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 – 4 days; test set up Monday, Wednesday, Friday
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Special Instructions:
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Refrigerate specimen within 4 hours of completion of 24-hour collection.
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Specimen
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Specimen Type:
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Urine
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Container:
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24 hour Urine Container
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Draw Volume:
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24 hour urine, submit entire collection to laboratory
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Processed Volume:
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10 mL (Minimum: 0.4 mL) from a 24 hour urine collection
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Collection:
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24 hour urine collection procedures. Collect in clean, plastic urine container(s) with no metal cap(s) or glued insert(s).
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Special Processing:
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Lab Staff: Mix 24-hour urine collection well. Measure and record entire collection volume. Remove aliquot into a 13 mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert (aliquot containers are provided by Mayo). Store and ship specimen at refrigerated temperatures. Do Not add a preservative.
24-hour volume is required on request form for processing.
Note: If a preservative has been added for another collection, refer to Mayo’s website for acceptable options.
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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, specimens other than urine
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Interpretive
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Reference Range:
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0 - 15 years:
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Not established
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> or = 16 years:
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15 - 60 mcg/specimen
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The reference value is for a 24-hour collection.
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Critical Values:
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N/A
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Limitations:
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High concentrations of barium are known to interfere with this test. If barium-containing contrast media has been administered, a specimen should not be collected for 96 hours.
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Methodology:
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Dynamic Reaction Inductively Coupled Plasma –Mass Spectrometry (DRC-ICP-MS)
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References:
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Mayo Medical Laboratories (May 2013)
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Updates:
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11/22/2010: Random specimens will no longer be accepted under this order code.
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