EBMcalc Medical Calculator

Anion Gap

Input

Sodium

Chloride

Bicarbonate

Result

Important: Inputs must be complete to perform calculation.

Anion Gap

Decimal Precision

Data action

Include literature references: Yes No

Equations used

Anion Gap = Sodium - (Chloride + Bicarbonate)

References

Wrenn K. The delta (delta) gap: an approach to mixed acid-base disorders. Ann Emerg Med. 1990 Nov;19(11):1310-3. PubMed ID: 2240729
Breyer JA. Acid base course material. 6th National Critical Care Medicine Review Course.

Associated Medical Subject Headings [MeSH]

Acid-Base Equilibrium, Acid-Base Imbalance, Adult, Bicarbonates, Diagnosis, Differential, Female, Humans, Male, Mathematics, Middle Aged, Osmolar Concentration

Associated Logical Observation Identifiers Names and Codes [LOINC]

Parameter	LOINC's and Suggested Units
Sodium	2951-2 : mmol/L 2947-0 : mEq/L 32340-2 : mEq/L 39791-9 : mEq/L
Chloride	2075-0 : mEq/L 2069-3 : mEq/L 41649-5 : mEq/L 32307-1 : mEq/L
Bicarbonate	2028-9 : mmol/L 1959-6 : mEq/L 1960-4 : mEq/L 14627-4 : mEq/L 1961-2 : mEq/L 22735-5 : mEq/L 1963-8 : mEq/L
Anion Gap	33037-3 : mEq/L 10466-1 : mEq/L

This material contains content from LOINC (http://loinc.org). LOINC is copyright © 1995-2023, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license. LOINC® is a registered United States trademark of Regenstrief Institute, Inc.

Associated HCC ICD10-CM codes

E10.10

Type 1 diabetes ketoacidosis without coma

E10.11

Type 1 diabetes ketoacidosis with coma

Associated ICD9-CM codes

276.2

Acidosis

775.7

Late metab acidosis nb

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