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Creatinine Clearance, Plasma and Urine

Message
Day(s) Test Set Up: Monday through Sunday


Test Code
CREA


CPT Codes
81050, 82575

Preferred Specimen
1.0 mL plasma, 24-hour urine collection


Instructions
Both plasma and urine are required for this test. Plasma specimen should be drawn during the 24-hour period of urine collection. Draw blood in an PST tube. Spin down and send refrigerated. Note: Label specimen appropriately (plasma). Also, submit an entire 24-hour urine collection in a urine container supplied. No preservative. Send specimen refrigerated. Note: 1. Starting and ending times of collection and total volume are required on request form for processing. 2. See "Urine Collection" in "Special Instructions." 3. Label specimen appropriately (urine).


Transport Container
PST tube, 24-hour urine container


Transport Temperature
Refrigerated


Methodology
Two-Point Rate

Reference Range
61-166 mL/min/24 hours


Clinical Significance
Creatinine clearance measures the glomerular filtration rate.



Last Updated: January 30, 2013


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.