URINARY SODIUM (Na)
The Urinary Sodium (Na) test measures the amount of sodium excreted in the urine. Sodium is an essential electrolyte that helps regulate fluid balance, blood pressure, and proper nerve and muscle function. This test provides valuable information about kidney function and the body’s fluid and electrolyte status.
Abnormal urinary sodium levels can indicate various conditions. Low urinary sodium may be seen in dehydration, heart failure, or conditions where the body is retaining sodium. High urinary sodium may be associated with kidney disorders, excessive salt intake, or certain hormonal imbalances. Doctors often use this test to differentiate between causes of electrolyte imbalance, assess kidney function, and evaluate conditions like hyponatremia or fluid overload.
The test requires a urine sample, either random or over a 24-hour period. Accurate results help doctors diagnose fluid and electrolyte disorders, monitor treatment, and guide appropriate medical care for maintaining overall health.