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Test Code LAB383 Creatinine Clearance

Important Note

BOTH SERUM and URINE are required for this test.

Required: Patient height and weight (pre-pregnancy weight for OB patients).

Specimen Requirement

Blood:
0.5 mL serum or Lithium Heparin plasma; SST and PST acceptable.

Specimen must be drawn within the same 24-hour period as the urine collection.

 

Urine:
24-hour urine collection. Submit entire collection

 

Referring lab: 24-hour urine total volume, patient height and weight (pre-pregnancy weight on OB patients) is required on request form. Centrifuge urine and send refrigerated, no preservatives required but may be collected with HCL or boric acid.

Specimen Stability

2 days at 20-25° C

6 days at 2-8° C

 

Testing Schedule

Daily

Reference Range

Male:      85 – 125 mL/min

Female:  75 – 115 mL/min

Testing Department

Chemistry

Method

Kinetic Alkaline Picrate

CPT Code

82575

Additional Testing Locations

This test is also performed daily at the following Altru Clinics:

  • Crookston
  • Devils Lake

Please contact appropriate lab location for specific test information, as methodology varies by site.

Outpatient Turnaround Time

Within 8 hours of collection

Inpatient STAT Turnaround Time

Not Applicable

Inpatient Routine Turnaround Time

4 hours after receipt