Clinics and Departments

Laboratory Services

Lab Dept:

Urine/Stool

Test Name:

COPPER, TIMED URINE

General Information

Lab Order Codes:

UCUQ

Synonyms:

Cu, Quantitative Urine

CPT Codes:

82525 - Copper

Test Includes:

Urine copper level reported in mcg/specimen.

Logistics

Test Indications:

Useful for investigation of Wilson’s disease and obstructive liver disease.

Lab Testing Sections:

Chemistry - Sendouts

Referred to:

Mayo Medical Laboratories (Test: CUU/8590)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 – 4 days; test set up Monday, Wednesday, Friday

Special Instructions:

Refrigerate specimen within 4 hours of completion of 24-hour collection.

Specimen

Specimen Type:

Urine

Container:

24 hour Urine Container

Draw Volume:

24 hour urine, submit entire collection to laboratory

Processed Volume:

10 mL (Minimum: 0.4 mL) from a 24 hour urine collection

Collection:

24 hour urine collection procedures. Collect in clean, plastic urine container(s) with no metal cap(s) or glued insert(s).

Special Processing:

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.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimen, specimens other than urine

Interpretive

Reference Range:

0 - 15 years:

Not established

> or = 16 years:

15 - 60 mcg/specimen

The reference value is for a 24-hour collection.

Critical Values:

N/A

Limitations:

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.

Methodology:

Dynamic Reaction Inductively Coupled Plasma –Mass Spectrometry (DRC-ICP-MS)

References:

Mayo Medical Laboratories (May 2013)

Updates:

11/22/2010: Random specimens will no longer be accepted under this order code.



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