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HelpEpic Test Code LAB446 Sodium: 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
Storage Requirements
Keep urine refrigerated during the collection period
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
>24 hours refrigerated after end of collection
Specimen not refrigerated
Reference Values
| Population | Units | Reference Range |
| All Populations | mmol/24 hour | 40-220 |
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 Sodium Output (mmol/24 hrs), Urine creatinine
Methodology
Beckman AU/Dx Series
CPT Code
84300 (see Reflex Testing)
Last Updated
30-Mar-19