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Albumin-Corrected Anion Gap Calculator

AG corrected by + 2.5 · (4 − albumin).

Compute the albumin-corrected anion gap, which adjusts the measured anion gap upward when serum albumin is low (each 1 g/dL drop in albumin reduces measured AG by ≈ 2.5 mEq/L).

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

mEq/L
g/dL

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

AG_corrected = AG_measured + 2.5 · (4.0 − albumin)

In depth

Compute the albumin-corrected anion gap, which adjusts the measured anion gap upward when serum albumin is low (each 1 g/dL drop in albumin reduces measured AG by ≈ 2.5 mEq/L).