What are the normal levels for sodium in the blood?

The normal levels for sodium in the blood range from 135 to 145 mEq/L, making the choice indicating 134-142 mEq/L the correct answer. These values are critical for maintaining fluid balance, nerve function, and muscle contractions in the body. When sodium levels fall below or rise above this range, it can lead to various health issues, such as hyponatremia or hypernatremia, respectively. Recognizing these normal levels is fundamental for monitoring and managing patients’ electrolyte balance in clinical settings.