Calculate the serum anion gap as Na − (Cl + HCO3), without potassium.
| Anion gap | – |
Use this calculator for the common uncorrected anion gap: sodium minus chloride minus bicarbonate, all in mmol/L. Potassium is not added. Albumin correction (about 2.5 mmol per 1 g/dl albumin below 4) is a separate habit and is not applied here.
This subtraction is a laboratory sketch, not a full acid-base work-up.
Na: Sodium, mmol/L.
Cl: Chloride, mmol/L.
HCO3: Bicarbonate, mmol/L.
Anion gap: Na − Cl − HCO3, in mmol/L.
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