Version 2.73

68986-9Influenza virus A H5a RNA [Presence] in Specimen by NAA with probe detectionActive

Term Description

This code defines a test that identifies the H5 hemagglutinin of influenza A. It is intended for presumptive identification of virus in patients who may be infected with Asian lineage influenza (influenza A subtype A/H5). The specimen can be human respiratory or viral culture. From the CDC: "Testing with the influenza H5a and H5b primer and probe sets should not be performed unless the patient meets the most current U.S. Department of Health and Human Services (DHHS) clinical and epidemiologic criteria for testing suspect A/H5 specimens. The definitive identification of influenza A/H5 (Asian lineage) either directly from patient specimens or from virus cultures requires additional laboratory testing, along with clinical and epidemiological assessment in consultation with national influenza surveillance experts.
Source: Regenstrief LOINC

Part Description

LP135652-8   Influenza virus A H5a RNA
Influenza A viruses are divided into subtypes on the basis of two proteins on the surface of the virus: hemagglutinin (HA) and neuraminidase (NA). For example, an "H7N2 virus" designates an influenza A virus subtype that has an HA 7 protein and an NA 2 protein. Similarly an "H5N1" virus has an HA 5 protein and an NA 1 protein. All known subtypes of influenza A viruses can infect birds, except subtypes H17N10 and H18N11, which have only been found in bats. There are nine known subtypes of H5 viruses (H5N1, H5N2, H5N3, H5N4, H5N5, H5N6, H5N7, H5N8, and H5N9). Most H5 viruses identified worldwide in wild birds and poultry are low pathogenic viruses, but occasionally highly pathogenic viruses have been detected. Sporadic H5 virus infection of humans, such as with Asian-origin highly pathogenic avian influenza A (H5N1) viruses currently circulating among poultry in Asia and the Middle East have been reported in 16 countries, often resulting in severe pneumonia with approximately 60% mortality worldwide. Source: Regenstrief LOINC, CDC: Influenza Type A Viruses

Fully-Specified Name

Influenza virus A H5a RNA

Additional Names

Short Name
FLUAV H5a RNA Spec Ql NAA+probe
Display Name
FLUAV H5a RNA NAA+probe Ql (Specimen)
Consumer Name Alpha
Influenza A H5a, Specimen

Example Answer List LL744-4

Source: Regenstrief Institute

Answer Code Score Answer ID
Detected LA11882-0
Not detected LA11883-8

Basic Attributes

First Released
Version 2.38
Last Updated
Version 2.69
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

Member of these Groups

LG32757-3 Influenza virus

Language Variants Get Info

zh-CNChinese (China)
流感病毒 A 型血凝素 H5a 型 RNA:存在情况或阈值:时间点:XXX:序数型:探针法.基因扩增.靶向
nl-NLDutch (Netherlands)
Influenzavirus A H5a RNA:aanwezigheid:moment:XXX:ordinaal:moleculaire techniek (PCR)
fr-CAFrench (Canada)
H5a influenza type A , ARN:Présence-Seuil:Temps ponctuel:XXX:Ordinal:Sonde avec amplification de la cible
fr-FRFrench (France)
Influenza virus A H5a ARN:Présence/Seuil:Ponctuel:Milieux divers:Qualitatif:PCR amplification de cible
de-DEGerman (Germany)
Influenza-Virus A H5a RNA:Nachweis oder Schwellenwert:Zeitpunkt:XXX:Ordinal:Zielfragmentamplifikation mit Sondendetektion
it-ITItalian (Italy)
Influenza virus A H5a RNA:PrThr:Pt:XXX:Ord:Sonda.amp.tar
ru-RURussian (Russian Federation)
Грипп вирус A H5a РНК:PrThr:ТчкВрм:XXX:Пор:Проба.усил.миш
es-MXSpanish (Mexico)
ARN del virus de la influenza A H5a:Presencia o umbral:Punto temporal:XXX:Ordinal:Amplificación de ácidos nucleicos con detección de sonda
es-ESSpanish (Spain)
Virus Influenza A H5a RNA:PrThr:Punto temporal:XXX:Ord:Sonda con amplificación dirigida
tr-TRTurkish (Turkey)
İnfluenza virüsü A H5a RNA:MevcEşik:Zmlı:XXX:Srl:Prob.amf.hdf

LOINC FHIR® API Example - CodeSystem Request Get Info