Test Code RCTUR Creatinine, Random, Urine
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 6 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Useful For
Calculation of creatinine clearance, a measure of renal function, when used in conjunction with serum creatinine
Normalization of urinary analytes by creatinine concentration to account for the variation in urinary concentrations between subjects
Method Name
Enzymatic Colorimetric Assay
Reporting Name
Creatinine, Random, USpecimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Urine | Refrigerated (preferred) | 30 days | |
Frozen | 30 days | ||
Ambient | 14 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
≥18 years old: 16-326 mg/dL
Reference values have not been established for patients who are <18 years of age.
Performing Laboratory
Mayo Clinic Laboratories in RochesterTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
82570
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
RCTUR | Creatinine, Random, U | 2161-8 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
RCTUR | Creatinine, Random, U | 2161-8 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Day(s) Performed
Monday through Sunday