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Test Code LAB4070 CREATININE, URINE (RANDOM)

Specimen Type

Preferred Specimen: Transparent Red Top Tube
Alternative Specimen: Yellow Urine Tube, Sterile Container

Specimen Volume

6 mL

Minimum Volume

1 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Room Temp: 2 days
Refrigerated: 6 days
Frozen: 6 months

Specimen Processing

Centrifuge urine samples containing precipitates before performing the assay.

Random and timed urine  Creatinine samples do not need a preservative. However, if other urine analytes are being measured with creatinine at the same time, the only preservative that can be used is either; Hydrochloric acid (HCL) (14 to 47 mmol/L urine, e.g. 5mL 10% HCL or 5mL 30% HCL per liter urine) or boric acid (81mmol/L, e.g. 5g boric acid per liter urine).

 

Method

Enzymatic

Reference Ranges

Age Sex Range
0 up to 18 years Female None established
18 years and older Female 45.0 - 106.0 mg/dL
0 up to 18 years Male None established
18 years and older Male 58.0 - 161.0 mg/dL

 

Reporting Limit

2.50 - 400.00 mg/dL

Test Components

Creatinine, Urine, mg/dL.

CPT Codes

82570

Specimen Rejection

Specimens contaminated with fecal material or meconium will be rejected.