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HelpTest Code GDCU Gadolinium/Creatinine Ratio, Urine
Specimen Required
Only orderable as part of a profile. For more information see GDUCR / Gadolinium/Creatinine Ratio, Random, Urine.
Useful For
Measurement of gadolinium concentration for assessing chronic exposure and monitoring effectiveness of dialysis using a random urine collection
Special Instructions
Method Name
Only orderable as part of a profile. For more information see GDUCR / Gadolinium/Creatinine Ratio, Random, Urine.
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
Reporting Name
Gadolinium/Creat Ratio, USpecimen Type
UrineSpecimen Minimum Volume
1.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitabilityReference Values
Only orderable as part of a profile. For more information see GDUCR / Gadolinium/Creatinine Ratio, Random, Urine.
0-17 years: Not established
≥18 years: <0.8 mcg/g creatinine
Interpretation
Elevated gadolinium in a specimen collected more than 96 hours after contrast media infusion does not indicate risk of nephrogenic systemic fibrosis.
Day(s) Performed
Thursday
Report Available
2 to 8 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83018
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| GDCU | Gadolinium/Creat Ratio, U | 93854-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 615339 | Gadolinium/Creat Ratio, U | 93854-8 |