Sodium, 24-Hour Urine with Creatinine : 838

Test Code

24NCAU or 838

CPT Codes
84300, 82570

Transport Container

Specimen
10 mL urine aliquot from 24-hour collection - no preservative

Transport Temperature

Room temperature.

Specimen Stability

Room temperature: 7 days; Refrigerated: 7 days; Frozen: 28 days

Methodology
Ion Selective Electrode (ISE); Spectrophotometry

Setup Schedule

Sunday - Saturday

Report Available

1 day

Reference Range

See Laboratory Report

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 creatinine value provides evidence of proper 24-hour urine collection.

Performing Laboratory
med fusion

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.