Sodium, Urine

Message

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

UNAR

Alias/See Also

70289;
Na,
Urine Random;
Random Urine Na;
Random Urine Sodium;

CPT Codes
84300

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

Clean screw-top plastic vial or urine cup.

Transport Temperature

Refrigerated

Specimen Stability

Room Temperature = 5 days
Refrigerated = 5 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

24/7
AU

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, OH 45439

Last Updated: November 23, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.