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Test Code U_CR Creatinine Urine

EHR Test Codes

  Test Code Test Name
Atlas U_CR Creatinine Random Urine
Cerner   Creatinine Urine

Specimen Requirements

Preparation of Patient: 

None.

 

Container Type: 

Sterile Specimen Cup

 

or

 

White Top 6mL No Additive Tube

 

Specimen Type:

Urine

 

Specimen Volume: 

6 mL Urine minimum .5 mL

 

Specimen Handling/Transport:

If available, aliquot urine into White Top 6ml No Additive Tube via urine transfer straw.  Transport refrigerated 2-8°C.

 

Specimen Stability/Storage:

2 days ambient room temperature

5 days refrigerated 2-8°C

 

Specimen Rejection:

Samples in preservatives

Performing Laboratory

Munson Medical Center Laboratories

Chemistry Department

Priority, Frequency, & Turnaround

Priority:

Non-Emergent

 

Frequency:

24 hours 7 days a week

 

Turnaround:

0 - 1 days

Methodology

Modified Jaffee, kinetic

Reporting

Reference Range:

None

 

Critical Decision: 

None

Clinical Significance

The renal clearance of creatinine provides an estimate of glomerular filtration rate (GFR). Since creatinine for the most part in the urine only comes from filtration, the concentration of creatinine reflects overall urinary concentration. Therefore, creatinine can be used to normalize other analytes in a random urine sample.

CPT Code(s)

82570