Sodium, 24 Hour Urine

Message

Test performed at York Hospital Laboratory.

Test Code

USOD24H

CPT Codes
84300

Preferred Specimen

5 mL aliquot of a well mixed 24-hour urine, submitted in a plastic leakproof container

Transport Temperature

Refrigerated

Specimen Stability

Room temperature: 24 hours Refrigerated: 7 days Frozen: 6 months

Methodology
Potentiometric

Setup Schedule

Daily

Report Available

Next day

Reference Range

40-220 mmol/day

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, diuretic therapy and water deprivation dehydration.

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.