What is NA in a metabolic panel mean?

In a metabolic panel, "Na" refers to sodium, an essential electrolyte that helps regulate fluid balance, blood pressure, and nerve and muscle function. Abnormal sodium levels can indicate various health issues, such as dehydration, kidney problems, or hormonal imbalances. High sodium (hypernatremia) may suggest dehydration, while low sodium (hyponatremia) can indicate overhydration or certain medical conditions. Monitoring sodium levels is crucial for assessing overall metabolic health.