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Labcorp Oklahoma, Inc.
Test Directory


Index:

Urea Nitrogen Clearance 24 Hour Urine

Order Name UREA CL UR
Test Number: 2028575
Revision Date 06/04/2021
Test Name Methodology LOINC Code
Total Urine Volume
3167-4 
Serum Creatinine for Clearance 24 Urine
Kinetic Alkaline Picrate (Jaffe) 2160-0 
Creatinine, Urine, mg/dL
Kinetic Alkaline Picrate (Jaffe) 20624-3 
Urea Serum
3091-6 
Urea, Urine, mg/dL
Urease/GLDH 63481-6 
Urea Clearance
3098-1 
Urea, Urine, 24 Hour
48999-7 
Creatinine, Urine, 24 Hour
2162-6 
Hours Collected - Prompt
30211-7 
Volume 24 Urine Prompt
 
Height in Feet - Prompt
 
Height in Inches - Prompt
 
Weight in Pounds (Lbs) - Prompt
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Urine, 24-hour 24 hour Urine Container Refrigerated
Instructions 24 hour urine collection. No preservative. Record number of hours and volume in ml on the specimen container.
Include height and weight of patient. Draw serum or plasma for urea within the collection time.
Blood specimens drawn within 2 hours before or after collection are acceptable.
Refrigerate urine during collection.
Specimen stability: Ambient 2 days, Refrigerated 6 days, Frozen 1 month
GENERAL INFORMATION
Testing Schedule Mon- Fri 
Expected TAT 1-2 days  
Clinical Use Useful as an aid in evaluating renal function. 
CPT Code(s) 84545
Lab Section Chemistry