CREATININE CLEARANCE 24 HR URINE ONLY

Message
CHEMISTRY


Test Code
24HR UA CREAT CLEAR


Includes
CREATININE, VOLUME, COMPUTED CREATININE CLEARANCE


Preferred Specimen
24HR URINE COLLECTION, PLUS ORDER AND BLOOD CREATININE ORDER


Minimum Volume
10 MLS


Instructions
COLLECT 24HR URINE SAMPLE,FIRST MORNING URINE OF START OF 24HRS NEEDS TO BE VOIDED, EVERYTHING AFTER THAT INCLUDING THE SECOND MORNINGS FIRST URINE CAN GO INTO JUG. RECORD DATE/TIME WHEN COLLECTION IS STARTED AND FINISHED. REFRIGERATE DURING COLLECTION. PT MUST BRING BACK TO WRJ OR A CBOC. MUST ALSO ORDER A PLASMA CREATININE WITH CLEARANCE, MUST ALSO ORDER.DRAW 1 LITH HEP. LT GRN TUBE, SPIN AND SEND TO LAB


Transport Container
24 HR URINE CONTAINER


Transport Temperature
REFRIGERATED


Specimen Stability
Room temperature: 2 days
Refrigerated (2-8°C): 6 days
Frozen (-20°C or colder): 6 months


Methodology
Kinetic Jaffe

Setup Schedule
DAILY


Report Available
DAILY


Reference Range
Gender Reference range Units
Male 85 - 125 mL/min
Female 75 - 115 mL/min


Clinical Significance
Creatinine Clearance is used to evaluate the glomerular filtration rate (GFR). Clearance is defined as that volume of plasma from which a measured amount of substance could be completely eliminated into the urine per unit of time. Daily creatinine production is fairly constant except when there is massive injury to muscle.


Performing Laboratory
WHITE RIVER JUNCTION VT VA- CHEMISTRY 802-295-9363 EXT: 5518, 5519



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.