8–16 mEq/L
. Calculated from electrolyte values.
■ Anion gap equals the difference between the cations (sodium and
potassium) and the anions (chloride and bicarbonate).
■ (Na + K+) – (Cl- +HCO3-) = AG
■ Elevated AG (>17 mEq/L) is associated with metabolic acidosis.
■ Decreased AG (<8 mEq/L) is associated with metabolic alkalosis
(see ABG section in this Tab).
