85803-5
Influenza virus A H3 Ag [Titer] in Isolate by Hemagglutination inhibition
Active
Part Descriptions
LP35176-4 Influenza virus A H3
The influenza virus A (FLUVA) genome is composed of eight gene segments (PB2, PB1, PA, HA, NP, NA, M, NS1) that code for 11 proteins. Two of the genes, hemagglutinin (HA) and neuraminidase (NA), determine the structure of the two primary surface proteins of influenza viruses. The HA and NA gene sequences are used to determine the Influenza virus subtype. Currently there are 16 subtypes of HA and 9 subtypes of NA known, but only H 1, 2 and 3, and N 1 and 2 are commonly found in humans. PMID: 17458769 The M gene segment, which encodes two matrix proteins (M1 and M2), may also be used as a target in PCR-based assays for detection of FLUVA in various specimens.
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
Fully-Specified Name
- Component
- Influenza virus A H3 Ag
- Property
- Titr
- Time
- Pt
- System
- Isolate
- Scale
- SemiQn
- Method
- HAI
Additional Names
- Short Name
- FLUAV H3 Ag Titr Islt HAI
- Display Name
- FLUAV H3 Ag HAI (Isol) [Titer]
- Consumer Name Alpha Get Info
- Influenza A H3 antigen
Basic Attributes
- Class
- MICRO
- Type
- Laboratory
- First Released
- Version 2.61
- Last Updated
- Version 2.75
- Order vs. Observation
- Both
Member of these Groups Get Info
| LOINC Group | Group Name |
|---|---|
| LG32757-3 | Influenza virus |
Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| de-DE | German (Germany) | Influenza-Virus A H3 Ag: |
| es-ES | Spanish (Spain) | Hemaglutinina H3 del virus Influenza A Antígeno: Synonyms: Semicuantitativo |
| es-MX | Spanish (Mexico) | Virus de la influenza A H3 Ag: |
| fr-CA | French (Canada) | H3 influenza type A, Ag: |
| fr-FR | French (France) | Influenza virus A H3 Ag: |
| it-IT | Italian (Italy) | Influenza A H3, virus, Ag: Synonyms: Inibizione dell''emoagglutinazione Microbiologia Punto nel tempo (episodio) Titolo Virus dell''influenza Virus dell''influenza A Virus dell''influenza A H3 |
| nl-NL | Dutch (Netherlands) | Influenzavirus A H3 Ag: Synonyms: antigeen |
| pl-PL | Polish (Poland) | Wirus grypy A H3 Ag: Synonyms: Antygen wirusa grypy typ A podtyp H3 Wirus grypy Wirus grypy typ A Wirus grypy typ A podtyp H3 |
| zh-CN | Chinese (China) | 流感病毒 A 型血凝素 H3 型 抗原: Synonyms: A 型 A 型流感; |
Example Units
| Unit | Source |
|---|---|
| {titer} | Example UCUM Units |
LOINC Terminology Service (API) using HL7® FHIR® Get Info
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- CodeSystem lookup
- https:
//fhir.loinc.org/CodeSystem/$lookup?system=http: //loinc.org&code=85803-5
LOINC Copyright
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