HAGMA Calculation — RACP Adult Medicine MCQ

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EasyNephrologyHAGMA CalculationRACP Adult Medicine

A 50-year-old man: ABG pH 7.22, PaCO₂ 30, HCO₃ 12, Na 140, K 4.5, Cl 100. What is the anion gap?

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Correct answer: A — 28 – HAGMA

AG = 140 – (100 + 12) = 28. HAGMA. GOLDMARK causes: Glycols, Oxoproline, Lactate, D-lactate, Methanol, Aspirin, Renal failure, Ketoacidosis.

Reference: eTG – 2025 – Nephrology