Test directory: Creatinine Clearance, Urine

Ordering Code156
Test NameCreatinine Clearance, Urine
Alias24 Hr Urine Creatinine Clearance
Preferred SpecimenUrine, 24 Hour and Serum
Preferred Container24 Hour Urine Container and Serum, SST (Gold)
Other Specimen/ContainerPlasma in Lithium Heparin (Green),
Serum in Plain (Red)
Random urine collection is not acceptable.
Optimum VolumeSerum/Plasma = 1 mL
Urine = 1 mL
Collection InstructionsRecord entire 24 Hr Vol on container & requisition
Keep urine refrigerated during entire collection. No preservatives added to urine
Collect serum for creatinine within 48 hours of the start, or 48 hours of the end, of urine collection.
Handling InstructionsUrine: Send a well-mixed, 50 mL aliquot of specimen
Freeze aliquot if transport time >6 days.
Transport RequirementsOahu: Serum/Plasma = Ambient
Oahu: Urine = Refrigerated
Airline: Serum/Plasma = Refrigerated
Airline: Urine = Refrigerated
Specimen StabilityAmbient: Serum/Plasma = 2 Days
Refrigerated: Serum/Plasma = 7 Days, Urine = 6 Days
Frozen: Serum/Plasma = 3 Months, Urine = 6 Months
Frozen samples should be thawed only once.
Rejection CriteriaSpecimen older than stability limits, Hemolyzed serum/plasma specimen, Insufficient quantity, Preservatives in urine,
Random urine collection, Urine collection is less than 22 hours, Urine collection is greater than 26 hours,
Part of the urine collection is discarded, Received ambient urine
Avail. StatNO
Analytic Time1 Day
MethodologyAlkaline picrate-kinetic

Reference range(s)

The reference ranges listed below are valid on this date of November 21, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Creatinine Clearance, 24hr UrineALL80-14080-140mL/min
Serum CreatinineALL0.6-1.40.6-1.4mg/dL
Urine CreatinineALLmg/dLSee report.
Total VolumeALLmLSee report.
Total TimeALLminutesSee report.