Anion Gap Calculator
Calculate serum anion gap
mEq/L
mEq/L
mEq/L
Formula
AG = Na⁺ - (Cl⁻ + HCO₃⁻)
Normal anion gap is 8-12 mEq/L. Elevated gap suggests metabolic acidosis.
Examples
Na 140, Cl 104, HCO3 24
AG = 12 mEq/L (normal).
Frequently Asked Questions
About Anion Gap
Calculate serum anion gap for metabolic acidosis evaluation.
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