This anion gap reference table shows the anion gap for a range of sodium (na⁺) values, assuming a chloride (cl⁻) of 104 mEq/L and a bicarbonate (hco₃⁻) of 24 mEq/L. Every figure is computed with the same engine that powers our Anion Gap Calculator, so the numbers are exact.
| Sodium (Na⁺) | Anion gap |
|---|---|
| 35 mEq/L | -93.0 |
| 70 mEq/L | -58.0 |
| 110 mEq/L | -18.0 |
| 140 mEq/L | 12.0 |
| 210 mEq/L | 82.0 |
| 280 mEq/L | 152.0 |
| 420 mEq/L | 292.0 |
| 700 mEq/L | 572.0 |
| 980 mEq/L | 852.0 |
| 1,400 mEq/L | 1,272.0 |
How to use this table
Find the row closest to your sodium (na⁺) and read across to the anion gap. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Anion Gap Calculator for a precise answer.
Need a value that is not in the table? — the Anion Gap Calculator does it instantly, for free, with the formula and a worked example built in.
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