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HelpCreatinine Clearance, 24 Hour
Additional Codes
LAB818
Performing Laboratory
MBMC Main Laboratory
Methodology
Enzymatic- colorimetric
Specimen Requirements
Plasma and urine are required. Blood should be drawn midway into 24-hour urine collection. Call Missouri Baptist Medical Center Laboratory Customer Support at 314-996-4522 when urine collection has been started.
Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin
gel)
Specimen Volume: Full tube
Specimen Type: Urine, 24 hour
Container/Tube: Plastic urine container
Specimen Volume: Entire 24-hour collection
Collection Instructions: No preservative.
Additional Information:
1. Starting and ending times of collection are
required.
2. Follow instructions in Urine Collection in Special
Instructions.
Specimen Transport Temperature
Ambient-Plasma
Refrigerate-Urine
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: within 4 hours
Reference Values
60-130 mL/minute
Test Classification and CPT Coding
Test Classification:
This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer’s instructions.
CPT Code:
81050-Volume measurement for timed collection
82565-Creatinine, blood
82570-Creatinine, urine