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HelpTest Code U24 Creat CRMC CREATININE CLEARANCE AND/OR 24 HR URINE
Patient Preparation
No special patient preparation required
Special Collection Instructions
Collection of serum/plasma creatinine during time of 24-hour urine collection.
Patients current height in centimeter and current weight in kilograms to be entered by the ordering personnel at the time the test is ordered in the lab computer system.
Collection Method
Urine collection
Venous collection
Minimum Volume
5 mL
Container
Urine
Serum (red or gold top)
Preferred Specimen
Urine sterile container
Red or Gold top (serum)
Acceptable Specimen(s)
Urine sterile container
Red or Gold top (Serum)
Reference or Target Ranges
|
Adult Males |
950-2490 mg/day |
|
Adult Female |
600-1800 mg/day |
Reportable Units
mg/day
Critical Value
Not defined for this assay
Reasons for Rejection
QNS, Contamination, Improperly labeled, Improper specimen type
Specimen Stability
|
Refrigerated (4oC to 8oC) |
4 Days |
|
Frozen |
1 Month |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
STAT: 1 hour, Routine: 4 hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Chemistry |
|
Methodology/Method Description |
Atellica |
Additional Information / Important Notes
Creatinine cleance is calculated based on plasma and urine creatinine concentrations as well as the timed urine volume (24-hour urine). It is adjusted for patient height and weight. Please note that creatinine clearance is different from eGFR.
Methodology/Method Description
Atellical CH Analyzer
CPT Codes
82570; 81050