LOINC
Version 2.70

97775-1Base excess standard in Cord 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^^standard
Property
SCnc
Time
Pt
System
BldCo
Scale
Qn
Method
Calculated

Additional Names

Short Name
Base excess std BldCo Calc-sCnc
Display Name
Base excess standard Calc (BldCo) [Moles/Vol]
Consumer Name Alpha
Base excess Standard, Cord blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.70
Last Updated
Version 2.70
Order vs. Observation
Both

Language Variants Get Info

zh-CNChinese (China)
碱剩余^^标准:物质的量浓度:时间点:脐带全血:定量型:计算法
nl-NLDutch (Netherlands)
base-overschot^^standaard:mol/volume:moment:navelstrengbloed:kwantitatief:berekend
et-EEEstonian (Estonia)
Aluste liig^^standardiseeritud:SCnc:Pt:uB:Qn:Arvutuslik
fr-BEFrench (Belgium)
Excès de base^^Standard:Concentration de substance:Temps ponctuel:Sang de cordon:Quantitatif:Calculé
fr-CAFrench (Canada)
Excès de base^^Standard:Concentration de substance:Temps ponctuel:Sang de cordon:Quantitatif:Calculé
it-ITItalian (Italy)
Basi, eccesso^^standard:SCnc:Pt:Sangue cordone ombelicale:Qn:Calcolato
ru-RURussian (Russian Federation)
Оснований избыток^^стандартный:МолКонц:ТчкВрм:КрП:Колич:Вычисленный
es-ESSpanish (Spain)
Exceso de base^^Estándar:Concentración de sustancia:Punto temporal:Sangre de cordón umbilical:Qn:Calculado
tr-TRTurkish (Turkey)
Baz fazlalığı^^standard:SubKons:Zmlı:KanKd:Kant:Hesaplanmış

Example Units

Unit Source
mmol/L Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=97775-1