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Creatinine 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

Plasma:
• 0 Minutes - 6 years: Male/ Female- 0.1-0.6 mg/dL
• 6 years - 13 years: Male/ Female- 0.2-0.8 mg/dL
• 13 years - 19 years: Male- 0.4-1.2 mg/dL
• 19 years – 150 years: Male- 0.8-1.3 mg/dL
• 13 years - 19 years: Female- 0.4-1.0 mg/dL
• 19 years – 150 years: Female- 0.6-1.1 mg/dL
Urine:
• 24-hour Urine:
- Female: 18 years – 150 years: 0.6-1.5 g/24Hr
- Male: 18 years – 150 years: 0.8-2.2 g/24Hr
• Creatinine Clearance: 18 years – 150 years: 60-130 mL/min

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

Special Instructions