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ABG Interpreter
Type in the three core values — pH, PaCO₂, HCO₃⁻ — and the interpretation appears as you go: the primary disorder plus compensation. Add Na⁺, Cl⁻, and albumin when you want the anion gap, the albumin-corrected gap, and the delta ratio too.
ABG Analyzer
enter the 3 core valuesAdd electrolytes for the anion gap (optional)
Optional. Filling these in adds the anion gap, the albumin-corrected gap, and the delta ratio (see the anion gap section above for what they mean).
Learn the method behind it
The tool applies the same steps you’d use on paper. If you want to be able to do this without a calculator — on an exam, or at 0300 — the companion guide walks through it with worked examples and the classic patterns to memorize. ABG Interpretation Made Easy: The Tic-Tac-Toe Method →