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24 Hour Creatinine Clearance

Test Code
CRECL


Alias/See Also
LAB3000144
 


CPT Codes
82575, 82575, 82575, 82575, 82575, 82575, 82575

Includes
24 hour urine volume
Creatinine, serum
Estimated GFR (CKD-EPI 2021)
Creatinine, urine
Calculated Creatinine Clearance


Preferred Specimen
24 hour urine container AND 2.0 mL serum collected in a gold serum separator tube (SST)


Minimum Volume
0.5 mL serum


Instructions
When drawing a serum for a 24 hour creatinine clearance, use the following guidelines:
  • For out patients, draw blood 24 hours before collection, during collection, or 24 hours after collection is complete.
  • For in patients, draw blood during or <2 hours after collection is complete.
Urine specimens should be collected into a clean, leak proof container.  If urine must be collected with a preservative for other analytes, 6N HCl or Boric acid can be used.


Specimen Stability
Serum creatinine is stable for:
  • 7 days refrigerated (2 - 8oC)
  • Indefinitely when frozen (<=-20oC)
Urine creatinine is stable for:
  • 2 days room temperature (20 - 25oC)
  • 6 days refrigerated (4 - 8oC)


Performing Laboratory
Penn Medicine Lancaster General Health



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.