Overview and Clinical Significance
Urine sodium is a key marker of electrolyte balance, kidney function, and fluid regulation. It reflects sodium excretion, which is influenced by diet, hydration, and renal health.
Clinical Significance
- Electrolyte Balance & Fluid Homeostasis: Sodium plays a crucial role in nerve signaling, muscle contractions, and blood pressure regulation.
- Kidney Function & Sodium Excretion: The kidneys regulate sodium levels, with abnormal excretion linked to renal disorders or tubular dysfunction.
- Hyponatremia & Hypernatremia:
- Low urine sodium may indicate dehydration, heart failure, or adrenal insufficiency.
- High urine sodium can be linked to kidney disease, excessive salt intake, or hormonal imbalances.
- Diagnostic & Therapeutic Applications: Urine sodium testing helps assess kidney function, electrolyte balance, and metabolic disorders.
Urine sodium is a key regulator of fluid and electrolyte stability, influencing renal health, cardiovascular function, and diagnostic evaluations.
