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Sodium, 24-Hour Urine without Creatinine : 11317
Test Code24NAAU or 11317
CPT Codes
84330
Transport Container
Preferred Specimen
10 mL urine aliquot from 24-hour collection - no preservative
Alternative Specimens
Urine preserved with boric acid; Urine preserved with acetic acid; Urine preserved with HCl; Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Minimum Volume
2 mL
10 mL urine aliquot from 24-hour collection - no preservative
Alternative Specimens
Urine preserved with boric acid; Urine preserved with acetic acid; Urine preserved with HCl; Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Minimum Volume
2 mL
Transport Temperature
Room temperature.
Specimen Stability
Room temperature: 14 days; Refrigerated: 14 days; Frozen: 60 days
Methodology
Ion Selective Electrode (ISE)
Setup Schedule
Sunday - Saturday
Report Available
1 day
Reference Range
52-380 mmol/24 hr
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.
Performing Laboratory
med fusion