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Copper, Urine
0020461
Ordering Recommendation

Useful in the assessment of overload. For the complete assessment of copper overload, Wilson Disease Screening Panel, Serum (0020598) is preferred.

Mnemonic
COPPER U
Methodology
Quantitative Inductively Coupled Plasma-Mass Spectrometry
Performed
Sun-Sat
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician). Collection from patients receiving iodinated or gadolinium-based contrast media must be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post contrast media exposure. 
Collect
24 Hour Urine. Refrigerate during collection. Specimen must be collected in a plastic container. Also acceptable: Random Urine. 
Specimen Preparation
Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Transport Tubes (ARUP supply #43116). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 mL) 
Storage/Transport Temperature
Refrigerated. Also acceptable: Room temperature or frozen. 
Unacceptable Conditions
Specimens collected within 72 hours after administration of iodinated or gadolinium-based contrast media.. Acid preserved urine. Specimens transported in containers other than specified. Specimens contaminated with blood or fecal material. 
Remarks
Record total volume and collection time interval on transport tube and on test request form. 
Stability
Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 1 year 
Reference Interval
Effective November 13,2017
Test Number
Components
Reference Interval
Copper, Urine-per volume0.3-3.2 µg/dL
Copper, Urine-per 24h3.0-45.0 µg/d
 Creatinine, Urine - per 24h
AgeMaleFemale
3-8 years140-700 mg/d140-700 mg/d
9-12 years300-1300 mg/d300-1300 mg/d
13-17 years500-2300 mg/d400-1600 mg/d
18-50 years1000-2500 mg/d700-1600 mg/d
51-80 years800-2100 mg/d500-1400 mg/d
81 years and older600-2000 mg/d400-1300 mg/d

Copper, Urine-ratio to CRT10.0-45.0 µg/gCRT

Interpretive Data
Individuals with symptomatic Wilson disease usually excrete more than 100 µg copper per day. Other conditions associated with elevated urine copper include cholestatic liver disease, proteinuria, some medications, and contaminated specimens.
Although random specimens may contain diagnostic information, a 24-hour collection is a more consistent indicator of copper urine.

Compliance Statement B: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Note
Refer to Copper-Ceruloplasmin Index (Copper Free) (0025079) for Wilson disease screening test. High concentrations of iodine may interfere with elemental testing.
Hotline History
View Hotline History
Components
Component Test Code*Component Chart NameLOINC
0020100Copper, Urine - per volume5632-5
0020101Copper, Urine - per 24h5633-3
0020207Creatinine, Urine - per volume2161-8
0020208Creatinine, Urine - per 24h2162-6
0025064Copper, Urine - ratio to CRT13829-7
0097110Total Volume19153-6
0097111Hours Collected30211-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • 24-hour urine copper
  • Copper/Creatinine Ratio, Urine
  • Cu
  • CUU
  • Normalized Urine Copper
  • Normalized Urine Cu