Version 2.72

39310-8Influenza virus A H9 Ab [Titer] in Serum by Hemagglutination inhibitionActive

Part Descriptions

LP35182-2   Influenza virus A H9
Influenza virus A H9:
- Potentially nine different subtypes
- Documented only in low pathogenic form
- At least three H9 infections in humans have been confirmed Source: Centers for Disease Control and Prevention, CDC

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

Fully-Specified Name

Influenza virus A H9 Ab

Additional Names

Short Name
FLUAV H9 Ab Titr Ser HAI
Display Name
FLUAV H9 Ab HAI (S) [Titer]
Consumer Name Alpha
Influenza A H9 antibody, Blood

Basic Attributes

First Released
Version 2.15
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 A 型血凝素 H9 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 A H9 As:titer:moment:serum:kwantitatief:hemagglutinatieremming
et-EEEstonian (Estonia)
A-gripi viirus H9 antikehad:Titr:Pt:S:Qn:HAI
fr-BEFrench (Belgium)
Virus influenza type A. H9 Ac:Titre:Temps ponctuel:Sérum:Quantitatif:Inhibition de l'hémagglutination
fr-CAFrench (Canada)
H9 influenza type A , Ac:Titre:Temps ponctuel:Sérum:Quantitatif:Inhibition de l'hémagglutination
fr-FRFrench (France)
Influenza virus A H9 Ac:Titre:Ponctuel:Sérum:Numérique:Hémagglutination indirecte
it-ITItalian (Italy)
Influenza virus A H9 Ab:Titr:Pt:Siero:Qn:HAI
ko-KRKorean (Korea, Republic of)
A형 인플루엔자 바이러스 적혈구응집소 H9 항체:역가:검사시점:혈청:정량:적혈구응집 억제
pt-BRPortuguese (Brazil)
Influenza vírus A H9 Ac:Título:Pt:Soro:Qn:Inibição da hemaglutinação
es-MXSpanish (Mexico)
Virus de la influenza A H9 Ab:Título:Punto temporal:Suero:Cuantitativo:Inhibición de la hemaglutinación
es-ESSpanish (Spain)
Hemaglutinina H9 del virus Influenza A Anticuerpos:Titulo / Factor de dilución:Punto temporal:Suero:Qn:Inhibición de la Hemaglutinación
tr-TRTurkish (Turkey)
İnfluenza virüsü A H9 Ab:Titr:Zmlı:Ser:Kant:HAI

Example Units

Unit Source
{titer} Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info