The test may be ordered by a doctor as part of a routine checkup or to diagnose and monitor medical conditions that can affect sodium levels, such as high blood pressure, heart disease, liver disease, kidney disease, and hormonal disorders. It may also be ordered if a person is experiencing symptoms of abnormal sodium levels, such as fatigue, confusion, muscle weakness, or seizures.
The test is used to measure the level of sodium in the blood, urine, or other body fluids. Sodium is an essential electrolyte that helps to regulate the balance of fluids in the body, nerve and muscle function, and blood pressure. Abnormal sodium levels can be a sign of various medical conditions, including dehydration, kidney disease, heart disease, and hormonal imbalances.