What is the normal sodium level in the human body?

The normal sodium level in the human body ranges from 135 to 145 milliequivalents per liter (mEq/L). Sodium is a crucial electrolyte that helps regulate fluid balance, blood pressure, and overall cellular function. Maintaining sodium within this range is important for proper physiological functioning. Levels below 135 can indicate hyponatremia, potentially leading to neurological complications, while levels above 145 suggest hypernatremia, which can also be dangerous and result in dehydration or other serious conditions.

Other ranges provided in the options, such as 120-130, 130-140, and 140-150, do not accurately reflect the clinically accepted normal range for sodium levels. Understanding the importance of sodium levels and their normal range is essential for nursing professionals in evaluating and managing patient care.