LOINC
Version 2.66

69949-6Epstein Barr virus capsid IgG Ab avidity [Presence] in Serum by ImmunoassayActive

Component
Epstein Barr virus capsid Ab.IgG avidity
Property
PrThr
Time
Pt
System
Ser
Scale
Ord
Method
IA

Additional Names

Short Name
EBV VCA IgG Avidity Ser Ql IA
Display Name Beta
EBV capsid IgG avidity IA Ql (S)
Consumer Name Alpha
Epstein Barr virus (EBV) Capsid IgG Avidity, Blood

Part Description

LP145572-6   Epstein Barr virus capsid Ab.IgG avidity
Avidity testing of Epstein Barr virus (EBV) capsid IgG is performed to differeniate between a primary and past infection. When B cells switch from the IgM to the IgG isotype in vivo, the first IgG antibodies produced are of low avidity. As IgG antibodies mature, B-cells end up producing IgG antibodies of relative higher avidities or binding strengths compared to early IgG antibodies. The IgG maturation process is usually completed within a few weeks after primary EBV infection. Measurements are obtained by EIA and a ratio is calculated between a patient’s urea-treated and non-urea-treated samples to define the avidity index. [PMID: 15297472] Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Regenstrief LOINC, PMID: 15297472

Basic Attributes

Class
MICRO
Type
Laboratory
First Released
Version 2.40
Last Updated
Version 2.56
Change Reason
Property has been changed from ACnc to reflect the fact that the definition of high or low avidity is determined by a defined cut-off point (threshold); The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.; The EIA method, which was always intended to cover more than just enzyme-linked immunoassay and whose display name for the long common name has always been Immunoassay, was renamed IA in order to eliminate ambiguity about whether the method has a broader meaning than just enzyme-linked immunoassay. Likewise, EIA.rapid was renamed IA.rapid. These changes were approved by the Laboratory LOINC Committee in June 2016.
Order vs. Observation
Both

Example Answer List LL360-9

Source: Regenstrief Institute

Answer Code Score Answer ID
Positive Copyright http://snomed.info/sct ID:10828004 Positive (qualifier value) LA6576-8
Negative Copyright http://snomed.info/sct ID:260385009 Negative (qualifier value) LA6577-6

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright 2001-2019 American Association for Clinical Chemistry. Epstein-Barr Virus (EBV) Antibody Tests

Language Variants Get Info

zh-CNChinese (China)
Epstein Barr 病毒衣壳 抗体.IgG 亲合力:存在情况或阈值:时间点:血清:序数型:免疫测定法
nl-NLDutch (Netherlands)
Epstein-Barvirus capside As.IgG-aviditeit:aanwezigheid:moment:serum:ordinaal:immunoassay
fr-BEFrench (Belgium)
Capside du virus de l'Epstein-Barr Anticorps.avidité des IgG:PrThr:Temps ponctuel:Sérum:Ordinal:IA
fr-CAFrench (Canada)
Capside du virus de l'Epstein-Barr , Ac.avidité des IgG:Présence-Seuil:Temps ponctuel:Sérum:Ordinal:IA
fr-FRFrench (France)
Epstein Barr virus capsid Ab.IgG avidity:PrThr:Pt:Ser:Ord:IA
it-ITItalian (Italy)
Epstein Barr virus, capside , Ab.avidità IgG:PrThr:Pt:Siero:Ord:IA
pt-BRPortuguese (Brazil)
Epstein Barr vírus capside Ac.IgG avidez:Limiar:Pt:Soro:Ord:Imunoensaio
ru-RURussian (Russian Federation)
Эпштейн-Барр вирус капсид Ат.IgG авидность:PrThr:ТчкВрм:Сыв:Пор:IA
es-ESSpanish (Spain)
Antígeno de la cápside del virus Epstein Barr Avidez IgG:PrThr:Punto temporal:Suero:Ord:IA
tr-TRTurkish (Turkey)
Epstein Barr virus capsid Ab.IgG avidite:MevcEşik:Zmlı:Ser:Srl:İA

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https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=69949-6