LOINC
Version 2.67

74824-4Powassan virus Ab [Presence] in Serum by Hemagglutination inhibitionActive

Part Descriptions

LP21134-9   Powassan virus
The Powassan virus is a tick-borne encephalitis virus related to the classic TBE flavivirus. This disease had its earliest origins in the town of Powassan, Ontario, found in a young boy who eventually died from it. Powassan virus is transmitted by I.cookei among small mammals in eastern Canada and the United States, where it has been responsible for 20 recognized cases of human disease. Other ticks may transmit the virus in a wider geographic area, and there is some concern that I.scapularis (also called I.dammini ), a competent vector in the laboratory, may become involved as it becomes more prominent in the United States. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Powassan virus

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] 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, Powassan virus

Fully-Specified Name

Component
Powassan virus Ab
Property
PrThr
Time
Pt
System
Ser
Scale
Ord
Method
HAI

Additional Names

Short Name
POWV Ab Ser Ql HAI
Display Name
Powassan virus Ab HAI Ql (S)

Basic Attributes

Class
MICRO
Type
Laboratory
First Released
Version 2.48
Last Updated
Version 2.56
Change Reason
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.
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

Member of these Groups

LG32767-2 Powassan virus

Language Variants Get Info

zh-CNChinese (CHINA)
Powassan 病毒 抗体:存在情况或阈值:时间点:血清:序数型:红细胞凝集抑制试验法
nl-NLDutch (NETHERLANDS)
Powassanvirus As:aanwezigheid:moment:serum:ordinaal:hemagglutinatieremming
fr-BEFrench (BELGIUM)
Virus Powassan Ac:PrThr:Temps ponctuel:Sérum:Ordinal:Inhibition de l'hémagglutination
fr-CAFrench (CANADA)
Virus Powassan , Ac:Présence-Seuil:Temps ponctuel:Sérum:Ordinal:Inhibition de l'hémagglutination
fr-FRFrench (FRANCE)
Powassan virus Ac:Présence/Seuil:Ponctuel:Sérum:Qualitatif:Hémagglutination indirecte
it-ITItalian (ITALY)
Powassan, virus , Ab:PrThr:Pt:Siero:Ord:HAI
pt-BRPortuguese (BRAZIL)
Powassan vírus Ac:Limiar:Pt:Soro:Ord:Hemaglutinação indireta
es-ESSpanish (SPAIN)
Virus Powassan Anticuerpos:PrThr:Punto temporal:Suero:Ord:Inhibición de la Hemaglutinación
tr-TRTurkish (TURKEY)
Powassan virüsü Ab:MevcEşik:Zmlı:Ser:Srl:HAI

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=74824-4