mmol/L
⚕️ For clinical reference only. Not a substitute for professional judgment.
Anion Gap Labs / Renal
Calculates anion gap with optional albumin correction. Classifies metabolic acidosis and guides differential diagnosis.
—
Enter electrolytes
Awaiting Na, Cl, and HCO3.
Electrolytes (all in mmol/L)
mmol/L
mmol/L
g/L (for correction)
Formula
AG = Na⁺ − (Cl⁻ + HCO₃⁻)
Normal: 8–12 mmol/L (4–12 with albumin correction)
Albumin-corrected AG:
Corrected AG = AG + 2.5 × (40 − albumin g/L)
Normal: 8–12 mmol/L (4–12 with albumin correction)
Albumin-corrected AG:
Corrected AG = AG + 2.5 × (40 − albumin g/L)
High AG — MUDPILES
M — Methanol
U — Uraemia
D — Diabetic ketoacidosis (DKA)
P — Propylene glycol
I — Isoniazid / Iron
L — Lactic acidosis
E — Ethylene glycol
S — Salicylates
U — Uraemia
D — Diabetic ketoacidosis (DKA)
P — Propylene glycol
I — Isoniazid / Iron
L — Lactic acidosis
E — Ethylene glycol
S — Salicylates
Normal AG — HARDUPS
H — Hyperchloraemia / Hypoaldosteronism
A — Addison's disease
R — Renal tubular acidosis (RTA)
D — Diarrhoea
U — Ureteroenteric fistula
P — Pancreatic fistula
S — Saline excess
A — Addison's disease
R — Renal tubular acidosis (RTA)
D — Diarrhoea
U — Ureteroenteric fistula
P — Pancreatic fistula
S — Saline excess