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Creatinine, Urine 24 Hour
MessagePerforming Lab: Central Lab, Hudson, Lakeview, Regions, Westfields
Test Code
0633
Alias/See Also
Sunquest: UCR24
CPT Codes
82570
Preferred Specimen
0.2 mL of a 24-hour urine collection
Minimum Volume
0.1 mL
Instructions
Preserve 24 hour urine collection with refrigeration.
Consult Urine Collection/Processing Information for acceptable preservatives
Consult Urine Collection/Processing Information for acceptable preservatives
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: 3 days
Refrigerated: 5-7 days
Refrigerated: 5-7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Unacceptable preservatives
Methodology
Two-Point Rate: Enzymatic
Setup Schedule
Hospital: Daily
Clinics: Monday - Friday
Clinics: Monday - Friday
Report Available
Same Day
Reference Range
800 - 1,800 mg/24 hours (Female)
1,000 - 2,000 mg/24 hours (Male)
1,000 - 2,000 mg/24 hours (Male)
Clinical Significance
Urinary creatinine, in conjunction with serum creatinine, is used to calculate the creatinine clearance, a measure of renal function. In a random sample, urinary analytes can be normalized by the Creatinine concentration to account for the variation in urinary concentrations between subjects
