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Urea Nitrogen, Random Urine
Test CodeLAB748
Alias/See Also
UUN, Random Urine
CPT Codes
84540
Preferred Specimen
10 ml (1 ml minimum) urine in urine container
Minimum Volume
1 ml aliquot of urine
Transport Temperature
Refrigerated
Specimen Stability
24 hours room temp, 5 days refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Bilirubin: >20 mg/dL, Hemoglobin: >500 mg/dL, Lipemia: >500mg/dL
Methodology
Enzymatic conductivity rate
Setup Schedule
Mon- Sun
Reference Range
No established reference range.
Clinical Significance
Measurements of urea nitrogen are used in the diagnosis and treatment of certain renal and metabolic disorders
Performing Laboratory
Piedmont Athens Regional