What is the normal range for sodium levels in the body?

The normal range for sodium levels in the body is between 135 and 145 milliequivalents per liter (mEq/L). Sodium is a vital electrolyte that plays a crucial role in maintaining fluid balance, nerve conduction, and muscle function. Levels outside this range can lead to various health issues, such as hyponatremia if levels are too low, or hypernatremia if levels are too high.

The specific range of 135-145 mEq/L is essential because it reflects the concentrations found in healthy individuals. Values below 135 can indicate a deficiency in sodium, leading to symptoms such as headache, confusion, and seizures, while values above 145 may suggest excess sodium, which can cause increased thirst, high blood pressure, and fluid retention. Understanding this normal range is critical for healthcare providers to assess and treat patients effectively regarding their fluid and electrolyte status.