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Test Name:
Sodium, Urine, Random
- SBMF No:
23143 - Performance Lab Name:
Automated Lab - Test Mnemonic:
U NAR - ABN:
Not required - CPT Code:
84300 - LOINC Code:
2955-3 - Also Known As:
Na - Also See:
23342 Sodium, 24-Hour Urine - Spec Type:
Urine, random - Spec Container:
Plastic container with tightly fitting lid - Pref Vol:
1.0 mL aliquot from well mixed collection - Min Vol:
0.5 mL aliquot from well-mixed collection - Fasting:
No - Spec Collect:
Routine random urine collection - Spec Store Transport:
Refrigerated - Spec Stability:
3 days refrigerated (2-8°C) - Methodology:
Ion-selective Electrode (ISE) - Use:
Evaluate renal function, electrolyte balance studies, acid-base balance, water balance - Clinical Significance:
The role of electrolytes in the human body is manifold. There are almost no metabolic processes that are not dependent on or affected by electrolytes. Among other functions of the electrolytes are maintenance of osmotic pressure and water distribution in the various body fluid compartments, maintenance of the proper pH, regulation of the proper function of the heart and other muscles, involvement in oxidation-reduction reactions, and participation in catalysis of cofactors for enzymes. - Reference Range:
Reference ranges not available for random urine - Additional Test Info:
Elevated urine sodium does not necessarily indicate that total body sodium is increased (e.g., salt-losing nephritis) - Day Run:
Sun-Sat (daily) - Time Run:
As received - Time Reported:
4 hours - Test Type:
URINE
