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Labcorp Oklahoma, Inc.
Test Directory


Index:

Creatinine Clearance Urine 24hr

Order Name CREA CL UR
Test Number: 2028225
Revision Date 05/03/2021
Test Name Methodology LOINC Code
Creatinine Clearance
2164-2 
Creatinine Serum
Kinetic Alkaline Picrate (Jaffe) 2160-0 
Creatinine, Urine, 24 Hour
2162-6 
Creatinine, Urine, mg/dL
Kinetic Alkaline Picrate (Jaffe) 20624-3 
Total Urine Volume
3167-4 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 5 mL (1.0) Urine and Serum See Instructions Refrigerated
Instructions Collect both: 24 hour Urine Container -and-
Clot Activator SST -or- Lithium Heparin PST (Light Green Top)

Serum or Plasma is needed for calculations in clearance results. Blood samples can be collected when 24hr urine container is returned. Refrigerate urine during and after collection. Urine can be collected with no preservative or 6 N HCL, Boric Acid and Sodium Carbonate are acceptable preservatives if collecting with another test. Record number of hours and volume in mL on the specimen container. Include height and weight of patient.
Specimen stability: Ambient 48 hours; Refrigerated 6 days, Frozen 6 months
GENERAL INFORMATION
Testing Schedule Mon-Fri 
Expected TAT 1-2 days  
Clinical Use Useful as an aid in monitoring renal function. 
CPT Code(s) 82575 (81050 if urine measured by RML)
Lab Section Chemistry