A patient's serum values are Na⁺ 141 mmol/L, Cl⁻ 107 mmol/L and HCO₃⁻ 19 mmol/L. What is the anion gap?

Answer and explanation

Correct answer: A. 15 mmol/L

  1. Step 1: Anion gap .
  2. Step 2: mmol/L.
Answer
15 mmol/L.
Why not the others: 34 mmol/L: Bicarbonate was not subtracted. 167 mmol/L: The three ions were added. 88 mmol/L: Only chloride and bicarbonate were compared.

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