Calculator

Albumin-corrected anion gap

New

AG + 2.5 × (4.0 − albumin g/dL).

mmol/L
mmol/L
mmol/L
g/dL

Corrected AG

17 mmol/L

High anion gap (unmasked by hypoalbuminaemia?)

Normal
High anion gap (unmasked by hypoalbuminaemia?)

Formula

na - (cl + hco3) + 2.5 * (4 - alb)

References

  1. Figge J, Jabor A, Kazda A, Fencl V. Anion gap and hypoalbuminemia. Crit Care Med 1998;26:1807-10.

Used in

Five-step blood gas interpretationHigh anion gap metabolic acidosis

Calculators support, not replace, clinical judgement. Check inputs and units, and confirm doses with your unit protocol.