Anion Gap Calculator

Electrolyte Gap Estimate

The anion gap compares measured blood cations and anions, often using sodium, chloride, and bicarbonate.

Method: The calculator uses the common formula: anion gap = sodium - (chloride + bicarbonate). Potassium can be included optionally.

Understanding Anion Gap

1. What This Calculator Measures

The anion gap compares measured blood electrolytes to estimate unmeasured ions.

2. How the Calculation Works

The calculator subtracts chloride and bicarbonate from sodium, with optional potassium included when entered.

3. Formula or Rule Used

anion gap = sodium - (chloride + bicarbonate).

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