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Anion Gap Calculator
Anion Gap = Na − (Cl + HCO₃). Used to diagnose metabolic acidosis. Normal 8-12. High AG suggests lactic acidosis, DKA, uremia.
HEALTHAnion Gap = Na − (Cl + HCO₃). Used to diagnose metabolic acidosis. Normal 8-12. High AG suggests lactic acidosis, DKA, uremia.
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
Disclaimer: Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Anion Gap Calculator
AG = Na − (Cl + HCO₃). Used to diagnose metabolic acidosis. Normal 8-12. High AG: MUDPILES mnemonic (Methanol, Uremia, DKA, Paraldehyde, INH, Lactic acidosis, Ethylene glycol, Salicylates).
Anion Gap
16.0 mEq/L
Albumin-corrected AG16.0 mEq/L
CategoryHigh — workup needed
Normal range varies by lab (4-12 vs 8-16 depending on method). Always correct for hypoalbuminemia in critically ill patients.
Frequently Asked Questions
What is the Anion Gap Calculator for?
Anion Gap = Na − (Cl + HCO₃). Used to diagnose metabolic acidosis. Normal 8-12. High AG suggests lactic acidosis, DKA, uremia.
How do I use the Anion Gap Calculator?
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
How accurate are my anion gap results?
Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Is the Anion Gap Calculator free to use?
Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.