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Creatinine Clearance 24-Hr Urine
Test CodeCRCL
Alias/See Also
UCREACL
Creatinine Clearance
Creatinine Clearance
CPT Codes
82575
Includes
24-hour urine creatinine
Serum creatinine
Calculated 24-hr creatinine clearance
Serum creatinine
Calculated 24-hr creatinine clearance
Preferred Specimen
24-hour urine collected in a sterile container without additive.
Need serum collected for serum creatinine. Needs to be collected preferably at end of collection period but within 24 hours.
Need serum collected for serum creatinine. Needs to be collected preferably at end of collection period but within 24 hours.
Other Acceptable Specimens
Collect urine without using additives. If urine must be collected with a preservative for other analytes, only hydrochloric acid (14 to 47 mmol/L urine, e.g., 5 mL 10% HCl or 5 mL 30% HCl per liter urine) or boric acid (81 mmol/L, e.g., 5 g per liter urine) may be used.
Instructions
Include the total volume collected over the 24-hour period if only an aliquot is sent.
Specimen Stability
Room temperature: Plasma\Serum Urine without preservative Urine (preservative) 7 days at 15 - 25°C 2 days at 15 - 25°C 3 days at 15 - 25°C Refrigerated: Plasma\Serum Urine without preservative Urine (preservative) 7 days at 2 - 8°C 6 days at 2 - 8°C 6 days at 2 - 8°C Frozen: Plasma/Serum Urine without preservative Urine (preservative) 3 months at -20°C 6 months at -20°C 3 weeks at -20°C
Last Updated: May 6, 2020
