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HelpEpic Test Code LAB21025 Urea Nitrogen: Urine, 24 hour
Performing Location(s)
BMC
Specimen Type
24 hour urine
Preferred Container
24 hour urine container with no preservative
Volume Required
Entire collection
At least 10 mL urine needs to be submitted to testing lab.
- Multiple test can be performed from this volume. For question please contact the lab at 547-3975.
Storage Requirements
If transportation is expected to exceed 1 hour, provisions must be made to keep the urine chilled.
Transportation Needs
Deliver specimen to the laboratory at the end of collection.
If transportation is expected to exceed 1 hour, provisions must be made to keep the urine chilled
Causes for Rejection
Mislabeled or unlabeled specimen
Greater than 10% of total volume lost
Inappropriate urine preservative used
Specimen not refrigerated
> 12hrs Room Temperature
>24 hrs Refrigerated
Reference Values
| Population | Units | Reference Range |
| All Populations | gm/24 hours | 6.0 - 17.0 |
Reflex Testing
A urine creatinine (CPT:82570) and output are performed and billed on all requests for 24 hour urine chemistries
Days of Analysis
All
Available STAT
No
Includes
Urine Urea Nitrogen Output (gm/24 hrs) , Urine Creatinine
Methodology
Beckman AU/Dx Series
CPT Code
84540 (see Reflex Testing)
Last Updated
30-July-19