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Urine Sodium 24 HR
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
24UNA
Alias/See Also
Sodium (24 HOUR URINE SUBMITTED),
Sodium(24 HOUR URINE),
URINE Sodium, URINE,
Sodium(24-HOUR URINE)
Sodium(24 HOUR URINE),
URINE Sodium, URINE,
Sodium(24-HOUR URINE)
CPT Codes
84300
Preferred Specimen
24 hour urine specimen. No preservative necessary if kept refrigerated during collection
Instructions
Transport 24 urine container in sealed plastic bag
Transport Container
24-HR. Urine Collection Container
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature = 14 days
Refrigerated = 14 days
Frozen = n/a
Refrigerated = 14 days
Frozen = n/a
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.
Methodology
ion selective electrode
Setup Schedule
Daily
Report Available
Daily
Clinical Significance
The excretion of sodium varies with dietary intake. There is a diurnal variation of sodium excretion with excretion being greater during daytime than during the night. Decreased levels are seen in congestive heart failure, excessive sweating, diarrhea, pyloric obstruction, malabsorption and primary aldosteronism. Increased levels may be due to increased salt intake, failure of the adrenal glands, diabetic acidosis, salt losing renal disease and water deficient dehydration.
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, Ohio 45439
Last Updated: November 23, 2021