LOINC
Version 2.71

11555-0Base excess in Blood by calculationActive

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

Component
Base excess
Property
SCnc
Time
Pt
System
Bld
Scale
Qn
Method
Calculated

Additional Names

Short Name
Base excess Bld Calc-sCnc
Display Name
Base excess Calc (Bld) [Moles/Vol]
Consumer Name Alpha
Base excess, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0j-a
Last Updated
Version 2.70
Order vs. Observation
Observation
Common US Lab Results Rank
84
Common SI Lab Results Rank
84

Member of these Panels

LOINC Long Common Name
24343-6 Gas and Carbon monoxide panel - Blood
24338-6 Gas panel - Blood

Language Variants Get Info

zh-CNChinese (China)
碱剩余:物质的量浓度:时间点:全血:定量型:计算法
nl-NLDutch (Netherlands)
base-overschot:mol/volume:moment:bloed:kwantitatief:berekend
et-EEEstonian (Estonia)
Aluste liig:SCnc:Pt:B:Qn:Arvutuslik
fr-BEFrench (Belgium)
Excès de base:Concentration de substance:Temps ponctuel:Sang:Quantitatif:Calculé
fr-CAFrench (Canada)
Excès de base:Concentration de substance:Temps ponctuel:Sang:Quantitatif:Calculé
fr-FRFrench (France)
Base excès:Moles/Volume:Ponctuel:Sang:Numérique:Résultat calculé
de-DEGerman (Germany)
Basenüberschuss:SKnz:Pkt:Blut:Qn:Berechnet
it-ITItalian (Italy)
Basi, eccesso:SCnc:Pt:Sangue:Qn:Calcolato
ko-KRKorean (Korea, Republic of)
염기 과잉:물질농도:검사시점:전혈:정량:
pt-BRPortuguese (Brazil)
Excesso de base:SCnc:Pt:SgTotal:Qn:
ru-RURussian (Russian Federation)
Оснований избыток:МолКонц:ТчкВрм:Кр:Колич:Вычисленный
es-ARSpanish (Argentina)
exceso de bases:concentración de sustancia:punto en el tiempo:sangre:cuantitativo:
es-ESSpanish (Spain)
Exceso de base:Concentración de sustancia:Punto temporal:Sangre:Qn:Calculado
tr-TRTurkish (Turkey)
Baz fazlalığı:SubKons:Zmlı:Kan:Kant:Hesaplanmış

Example Units

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

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=11555-0