NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is considered the threshold value for hypernatremia?

  1. Na > 130

  2. Na > 140

  3. Na > 145

  4. Na > 150

The correct answer is: Na > 145

Hypernatremia is a condition where there is an elevated sodium level in the blood. The threshold value for hypernatremia is typically considered to be a serum sodium level greater than 145 mEq/L. This means that when the sodium level in the blood exceeds 145 mEq/L, it is considered to be hypernatremia. Options A, B, and D have sodium levels that are below the accepted threshold for hypernatremia. Option C, Na > 145, is the correct threshold value for hypernatremia.

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