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Urea Nitrogen, Random Urine
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
UUNR
Alias/See Also
70199;
BUN (Random Urine)
BUN (Random Urine)
CPT Codes
84540
Preferred Specimen
Fresh urine
Minimum Volume
1 mL
Instructions
Obtain specimen in urine collection cup and transfer 2 mL to a screw-top transport tube.
Transport Container
Screw-top plastic transport tube
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature = 2 days
Refrigerated = 7 days
Frozen = 1 month
Refrigerated = 7 days
Frozen = 1 month
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.
Methodology
Spectrophotometric
Setup Schedule
24/7
AU
AU
Report Available
daily
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: November 23, 2021