LOINC
Version 2.71

51661-7Hepatitis A virus Ab [Presence] in Body fluidActive

Part Descriptions

LP16708-7   Hepatitis A virus
Hepatitis A virus (Hep A or HAV) is an RNA virus that causes an acute infectious disease of the liver and is usually spread by the fecal-oral route. It is transmitted by ingestion of contaminated food or water or through direct contact with an infectious person. In developing countries, and in regions with poor hygiene standards, the incidence of infection with this virus is high. HAV infection produces a self-limited disease that usually does not result in chronic infection or chronic liver disease. Overall occurrence acute liver failure from Hepatitis A is rare (approx. 0.5%). The risk for symptomatic infection is directly related to age, with >80% of adults having symptoms compatible with acute viral hepatitis and the majority of children having either asymptomatic or unrecognized infection. Antibody produced in response to HAV infection persists for life and confers protection against reinfection. The disease can be prevented by vaccination, and hepatitis A vaccine has been proven effective in controlling outbreaks worldwide.

Although HAV is excreted in the feces towards the end of the incubation period, specific diagnosis is made by the detection of HAV-specific IgM antibodies in the blood. IgM antibody is only present in the blood following an acute hepatitis A infection. It is detectable from one to two weeks after the initial infection and persists for up to 14 weeks. The presence of IgG antibody in the blood means that the acute stage of the illness is past and the person is immune to further infection. IgG antibody to HAV is also found in the blood following vaccination and tests for immunity to the virus are based on the detection of this antibody. 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, Hepatitis A virus (Wikipedia)

LP16708-7   Hepatitis A virus
Hepatitis A virus (HAV) is a small, non-enveloped single-stranded RNA virus that belongs to the Picornaviridae family, genus Hepatovirus. HAV has six genotypes (I to VI) in which genotypes I to III are human isolates and IV to VI are only simian isolates. Genotypes I to III are subdivided into groups A and B. Genotype I is the most frequently reported. [PMID: 15914081] The clinical manifestations of HAV infection can vary significantly and range from asymptomatic infection, usually seen in young children, to fulminant hepatitis, which can result in death. HAV has a global distribution, and transmission primarily occurs by the fecal-oral route. The risk of HAV transmission through blood products is very low, but there have been some reports of transmission through plasma products, mainly coagulation factors. [PMID: 12186933] [PMID: 1318940] 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, Hepatitis A virus (Wikipedia)

LP7238-1   Body fld
The LOINC "Body fld" System represents body fluids other than serum, plasma, blood, urine, and cerebrospinal fluid. When a LOINC term with the System "Body fld" is used, the specific specimen source or body fluid type should be reported elsewhere with the result. Where more specific terms for pleural, peritoneal, synovial fluid, etc. exist, we encourage you to use the more specific terms. In contrast to "Body fld", the System "Asp" in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst. "Asp" is used for abnormal fluid collections that are aspirated, while "Body fld" is used for named body fluids, such as synovial fluid or peritoneal fluid, that are not inherently pathologic. 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, Hepatitis A virus (Wikipedia)

Fully-Specified Name

Component
Hepatitis A virus Ab
Property
PrThr
Time
Pt
System
Body fld
Scale
Ord
Method

Additional Names

Short Name
HAV Ab Fld Ql
Display Name
HAV Ab Ql (Body fld)
Consumer Name Alpha
Hepatitis A virus (HAV) antibody, Body fluid

Basic Attributes

Class
MICRO
Type
Laboratory
First Released
Version 2.24
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

Member of these Groups

LG32762-3 Hepatitis A virus

Language Variants Get Info

zh-CNChinese (China)
甲型肝炎病毒 抗体:存在情况或阈值:时间点:体液:序数型:
nl-NLDutch (Netherlands)
Hepatitis A-virus As:aanwezigheid:moment:lichaamsvocht:ordinaal:
et-EEEstonian (Estonia)
A-hepatiidi viirus antikehad:PrThr:Pt:Fx:Ord:
fr-BEFrench (Belgium)
Virus de l'hépatite A Ac:PrThr:Temps ponctuel:Liquide biologique:Ordinal:
fr-CAFrench (Canada)
Virus de l'hépatite A , Ac:Présence-Seuil:Temps ponctuel:Liquide biologique:Ordinal:
fr-FRFrench (France)
Hépatite A virus Ac:Présence/Seuil:Ponctuel:Liquide biologique:Qualitatif:
de-DEGerman (Germany)
Hepatitis-A-Virus Ak:NWSW:Pkt:Körper Fl:Ord:
el-GRGreek (Greece)
Ιός Ηπατίτιδας Α Αντίσωμα:PrThr:Χρονική στιγμή:Σωματικό υγρό:Τακτική:
it-ITItalian (Italy)
Epatite A, virus , Ab:PrThr:Pt:Liquido corporeo:Ord:
pt-BRPortuguese (Brazil)
Hepatite A vírus Ac:ACnc:Pt:LiqOrg:Ord:
ru-RURussian (Russian Federation)
Гепатита А вирус Ат:PrThr:ТчкВрм:Тело ждк:Пор:
es-ESSpanish (Spain)
Virus de la Hepatitis A Anticuerpos:PrThr:Punto temporal:Fluido corporal:Ord:
tr-TRTurkish (Turkey)
Hepatit A virüsü Ab:MevcEşik:Zmlı:Vücut sv:Srl:

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=51661-7