What is the normal sodium (Na+) level range in mEq/L?

The normal sodium (Na+) level range is crucial for maintaining proper fluid balance, nerve function, and muscle function in the body. A sodium level of 135 to 145 mEq/L is considered normal and is necessary for physiological stability. Sodium helps regulate various bodily functions, including blood pressure and blood volume, thus making it vital for cellular homeostasis.

When sodium levels fall below this range, it can lead to hyponatremia, which can cause symptoms such as confusion, seizures, and muscle cramps. Conversely, if sodium levels rise above this range, it can result in hypernatremia, which may lead to symptoms including thirst, confusion, and even cellular dehydration. Therefore, the range of 135 to 145 mEq/L indicates normal physiological function and is essential for overall health.