Version 2.72

50709-5Influenza virus B Ab [Titer] in Serum by Hemagglutination inhibitionActive

Part Descriptions

LP14240-3   Influenza virus B
Influenza virus from the family Orthomyxoviridae are enveloped negative-strand RNA viruses with segmented genomes containing seven to eight gene segments. Of the five genera in the family, only influenza A virus (IAV), influenza B and C viruses are medically relevant to humans. Influenza A and B viruses have a similar structure whereby these viruses each contain eight discrete single-stranded RNA gene segments, each encoding at least one protein. While having a close phylogenetic relationship, influenza virus types A and B manifest very differently. While IAV infects birds, humans and other mammals, influenza B only infects humans and seals. Although both viruses cause human respiratory infection seasonally in temperate climate regions and more continually in the tropics, influenza B is normally less prevalent and causes less severe disease than IAV viruses. Research is ongoing to determine the evolutionary and epidemiological factors that shape the genetic diversity of influenza B virus. [PMID:25812763] [CDC:flu/about/viruses/types] Source: Regenstrief LOINC

LP6304-2   HAI
The hemagglutination-inhibition assay (HAI) can be used to identify subtypes of hemagglutinin producing viruses, such as Influenza. HAI can also be used to identify the subtype-specificity of antibodies against the virus. Normally, Influenza's hemagglutinin glycoprotein binds to receptors on the surface of red blood cells, causing them to agglutinate. If antibodies specific to the virus are present in the patient sample, they will bind to the virus, which prevents the virus from binding to the red blood cells and therefore prevents agglutination. To determine which subtype of virus is present, a viral isolate is tested against a series of antibodies with known subtype specificities. Whichever antibody inhibits red cell agglutination identifies the viral subtype. Similarly, antibody specificity is identified by testing the patient sample against known virus subtypes. [PMID:24899416] Source: Regenstrief LOINC, B blood group

Fully-Specified Name

Influenza virus B Ab

Additional Names

Short Name
Display Name
FLUBV Ab HAI (S) [Titer]
Consumer Name Alpha
Influenza B (Flu B) antibody, Blood

Basic Attributes

First Released
Version 2.22
Last Updated
Version 2.32
Order vs. Observation

Member of these Groups

LG32757-3 Influenza virus

Language Variants Get Info

zh-CNChinese (China)
流感病毒 B 型 抗体:滴定度:时间点:血清:定量型:红细胞凝集抑制试验法
nl-NLDutch (Netherlands)
Influenzavirus B As:titer:moment:serum:kwantitatief:hemagglutinatieremming
et-EEEstonian (Estonia)
B-gripi viirus antikehad:Titr:Pt:S:Qn:HAI
fr-BEFrench (Belgium)
Virus de l'influenza B Ac:Titre:Temps ponctuel:Sérum:Quantitatif:Inhibition de l'hémagglutination
fr-CAFrench (Canada)
Virus de l'influenza B , Ac:Titre:Temps ponctuel:Sérum:Quantitatif:Inhibition de l'hémagglutination
fr-FRFrench (France)
Influenza virus B Ac:Titre:Ponctuel:Sérum:Numérique:Hémagglutination indirecte
it-ITItalian (Italy)
Influenza B, virus Ab:Titr:Pt:Siero:Qn:HAI
pt-BRPortuguese (Brazil)
Influenza vírus B Ac:Título:Pt:Soro:Qn:Inibição da hemaglutinação
es-MXSpanish (Mexico)
Virus de la influenza B Ab:Título:Punto temporal:Suero:Cuantitativo:Inhibición de la hemaglutinación
es-ESSpanish (Spain)
Virus Influenza B Anticuerpos:Titulo / Factor de dilución:Punto temporal:Suero:Qn:Inhibición de la Hemaglutinación
tr-TRTurkish (Turkey)
İnfluenza virüsü B Ab:Titr:Zmlı:Ser:Kant:HAI

Example Units

Unit Source
{titer} Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info