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HelpTest Code LAB5492 Copper/Creatinine Ratio, Random, Urine
Specimen Required
Patient Preparation: High concentrations of barium are known to interfere with most metal tests. If barium-containing contrast media has been administered, the specimen should not be collected for at least 96 hours.
Supplies: Urine Tubes, 10 mL (T068)
Collection Container/Tube: Clean, plastic urine collection container with no metal cap or glued insert
Submission Container/Tube: Plastic, 10-mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 3 mL
Collection Instructions:
1. Collect a random urine specimen.
2. See Metals Analysis Specimen Collection and Transport for complete instructions.
Useful For
Investigation of Wilson disease and obstructive liver disease using a random urine specimen
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| CURC | Copper/Creat Ratio, U | No | Yes |
| CRETR | Creatinine, Random, U | No | Yes |
Special Instructions
Reporting Name
Copper/Creat Ratio, Random, USpecimen Type
UrineSpecimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 14 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
COPPER/CREATITINE:
Males:
0-17 years: Not established
≥18 years: 9-43 mcg/g creatinine
Females:
0-17 years: Not established
≥18 years: 7-72 mcg/g creatinine
CREATITINE:
≥18 years old: 16-326 mg/dL
Reference values have not been established for patients who are younger than 18 years.
Day(s) Performed
Monday, Thursday
Report Available
2 to 5 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82525
82570
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CURCU | Copper/Creat Ratio, Random, U | 13829-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 615258 | Copper/Creat Ratio, U | 13829-7 |
| CRETR | Creatinine, Random, U | 2161-8 |