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Test Code CRECL Creatinine Clearance

Performing Location

Southwestern Vermont Medical Center

Specimen Required/Volume

Specimen  Min. Test Volume Collection Container Special Handling
Blood 0.1 mL Light Green (lith. heparin) top
Gold top
Marble Red top		  
Urine (24HR) 0.1 mL 24 HR urine container In addition to serum or plasma sample

Reference Ranges & Critical Values

Assay Gender Age Range Normal Range Critical Values Units
Creatinine Clearance Female 0 Minutes – 150 Years 75 - 115   mL/min
  Male 0 Minutes – 150 Years 85 - 125   mL/min
Creatinine (s/p) Female 0 Minutes – 150 Years 0.5 - 0.9   mg/dL
  Male 0 Minutes – 150 Years 0.7 - 1.2   mg/dL
Creatinine (24 HR urine) Female 0 Minutes – 150 Years 0.7 - 1.6   g/day
  Male 0 Minutes – 150 Years 1.0 - 2.4   g/day

Collection Instructions

  1. Refer to Venipuncture Protocol for serum sample. The blood draw is usually done at the end of the collection when the patient returns the 24 hour urine specimen.

  2. Obtain a 24-hour urine container. Label clearly with patients name.

  3. Patient should empty bladder completely into the toilet after getting up the first morning. Record time and date on container.

  4. All subsequent urine specimens should be poured into the 24-hour urine container INCLUDING THE FIRST SPECIMEN COLLECTED AFTER GETTING UP IN THE FOLLOWING DAY. Record time and date on container.

  5. Any clean container may be used to pour the specimen into the 24-hour container.

  6. REFRIGERATE the 24-hour urine collection container until collection is complete. Bring to the laboratory as soon after collection as possible.

Specimen Stability

7 days at 2-8°C

Day(s) Performed

Monday - Sunday

CPT

82575

LOINC

34555-3