Version 2.77

Part Description

LP15429-1   Base excess
Base excess refers to the amount of a strong acid required to bring back the blood pH to the normal value of 7.4. The term and concept were first introduced by Astrup and Siggaard-Andersen in 1958 as a way to measure the metabolic component of an acid-base disturbance.

Actual versus standard:
In vivo, acid-base homeostasis takes place throughout the extracellular fluid (ECF), not just the blood compartment that is in a patient specimen. The concept of "standard" base excess attempts to adjust for the base excess of the entire extracellular compartment by calculating the base excess for blood diluted as if the entire extracellular compartment were sampled (approx Hgb of 5g/l). So the ACTUAL base excess (ABE) is the dose of acid to return PLASMA to normal pH, whereas the STANDARD base excess (SBE) is the dose to return ECF to normal pH.

Adjusting for oxygen saturation:
Base excess normally assumes 100% oxygen saturation, which is valid for many arterial specimens. However, it is possible to add additional terms to the calculation which account for the actual oxygen saturation of the patient sample. The terms in LOINC indicating 'Base excess.100% oxygenated' are intended to encode base excess terms adjusted for oxygen saturation (i.e. do not assume 100% oxygenation). Source: Regenstrief LOINC

Fully-Specified Name

Base excess

Additional Names

Short Name
Base excess BldCoV Calc-sCnc
Display Name
Base excess Calc (BldCoV) [Moles/Vol]
Consumer Name Alpha Get Info
Base excess, Venous cord blood

Basic Attributes

First Released
Version 2.00
Last Updated
Version 2.73
Order vs. Observation
Common Test Rank Get Info

Member of these Panels

LOINC Long Common Name
51972-8 Gas panel - Venous cord blood

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Base excess /BN ven.
es-AR Spanish (Argentina) exceso de bases:concentración de sustancia:punto en el tiempo:sangre venosa del cordón umbilical:cuantitativo:
es-ES Spanish (Spain) Exceso de base:Concentración de sustancia:Punto temporal:Sangre de cordón venoso:Qn:Calculado
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Exceso de base:Concentración de sustancias:Punto temporal:Cordón sanguíneo venoso:Cuantitativo:Calculado
et-EE Estonian (Estonia) Aluste liig:SCnc:Pt:vuB:Qn:Arvutuslik
Synonyms: Aine kontsentratsioon Juhuslik Kvantitatiivne Venoosne nabaväädi veri
fr-CA French (Canada) Excès de base:Concentration de substance:Temps ponctuel:Sang de cordon veineux:Quantitatif:Calculé
fr-FR French (France) Base excès:Moles/Volume:Ponctuel:Sang de cordon veineux:Numérique:Résultat calculé
fr-BE French (Belgium) Excès de base:Concentration de substance:Temps ponctuel:Sang de cordon veineux:Quantitatif:Calculé
it-IT Italian (Italy) Basi, eccesso:SCnc:Pt:Sangue cordone ombelicale, ven:Qn:Calcolato
Synonyms: Chimica Concentrazione di Sostanza Eccesso di basi Punto nel tempo (episodio) Sangue venoso di cordone ombelicale
ko-KR Korean (Korea, Republic Of) 염기 과잉:물질농도:검사시점:정맥제대혈:정량:
nl-NL Dutch (Netherlands) base-overschot:mol/volume:moment:veneus navelstrengbloed:kwantitatief:berekend
pt-BR Portuguese (Brazil) Excesso de base:SCnc:Pt:SgCorV:Qn:
Synonyms: Base ex; BSE; BE; Substance concentration; Level; Point in time; Random; Bld cord; Cord venous blood; Cord BldV; Quantitative; QNT; Quant; Quan; EXS; Chemistry
ru-RU Russian (Russian Federation) Оснований избыток:МолКонц:ТчкВрм:КрПВ:Колич:Вычисленный
Synonyms: Количественный Кровь пуповинная венозная Молярность;Молярная объёмная концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) Baz fazlalığı:SubKons:Zmlı:KanKdVen:Kant:Hesaplanmış
zh-CN Chinese (China) 碱剩余:物质的量浓度:时间点:脐带静脉全血:定量型:计算法
Synonyms: BE;BSE;碱超;碱过剩;过剩碱 克分子浓度;克分子浓度(单位体积);摩尔浓度;摩尔浓度(单位体积);物质的量浓度(单位体积) 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 脐带静脉血;脐带静脉血液 计算;计算型方法 过剩

Example Units

Unit Source
mmol/L Example UCUM Units
mmol/L eCHN

LOINC Terminology Service (API) using HL7® FHIR® Get Info

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