Version 2.79

Term Description

Immunofluorescence testing of lower respiratory specimens for Legionella pneumophila antigen has over 99% specificity, but only 25-70% of patients with culture-positive disease test positive for the antigen. Therefore, IF cannot be used to rule out Legionella infection, but a positive result is nearly always diagnostic. [http://www.who.int/water_sanitation_health/emerging/legionella.pdf]

Part Description

LP16720-2   Legionella pneumophila
Legionella pneumophila, a gram-negative bacillus, most commonly causes acute pneumonia (legionellosis). Transmission to humans is usually through aerosols of infected water sources such as fountains, misting systems, and drinking water. Severity of infections due to L. pneumophila range from mild (walking pneumonia) to fatal (multilobar pneumonia). Antimicrobial therapy usually includes erythromycin, with the addition of rifampin in severe cases. Initial response to therapy is usually rapid, but full recovery can take weeks to months. PMID: 21413250 Source: Regenstrief LOINC ,

Fully-Specified Name

Component
Legionella pneumophila Ag
Property
PrThr
Time
Pt
System
Respiratory system specimen.lower
Scale
Ord
Method
IF

Additional Names

Long Common Name
Legionella pneumophila Ag [Presence] in Lower respiratory specimen by Immunofluorescence
Short Name
L pneumo Ag Lower resp Ql IF
Display Name
L. pneumophila Ag IF Ql (Lower resp)
Consumer Name Alpha Get Info
Legionella pneumophila antigen, Lower respiratory

Example Answer List: LL744-4

Source: Regenstrief Institute
Answer Code Score Answer ID
Detected LA11882-0
Not detected LA11883-8

Basic Attributes

Class
MICRO
Type
Laboratory
First Released
Version 2.64
Last Updated
Version 2.77 (MAJ)
Change Reason
Release 2.77: SYSTEM: Updated to standardize the representation of "Respiratory system specimen" in the System subhierarchy across LOINC;
Order vs. Observation
Both

Member of these Groups Get Info

LOINC Group Group Name
LG41638-4 Legionella
LG34024-6 Legionella pneumophila Ag|PrThr|Sys:ANYResp

Language Variants Get Info

Tag Language Translation
el-GR Greek (Greece) Legionella pneumophila (Λεγιονέλλα) Αντιγόνο:PrThr:Pt:Δείγμα αναπνευστικού συστήματος.κατώτερο:Ord:Ανοσοφθορισμός
Synonyms: Legionella pneumophila (Λεγιονέλλα) PrThr
es-MX Spanish (Mexico) Legionella pneumophila Ag:Presencia o umbral:Punto temporal:Muestra de vías respiratorias inferiores:Ordinal:Inmunofluorescencia (IF)
es-ES Spanish (Spain) Legionella pneumophila Antígeno:PrThr:Punto temporal:Muestra de vías respiratorias inferiores:Ord:Inmunofluorescencia (IF)
Synonyms: Muestra del tracto respiratorio Muestra respiratoria Tracto respiratorio
fr-FR French (France) Legionella pneumophila Ag:Présence/Seuil:Ponctuel:Échantillon du système respiratoire inférieur:Qualitatif:Immunofluorescence
it-IT Italian (Italy) Legionella pneumophila, Ag:PrThr:Pt:Campione da Sistema Respiratorio.inferiore:Ord:IF
Synonyms: Campione da Apparato Respiratorio Campione da apparato respiratorio inferiore Immunofluorescenza (IF) Microbiologia Presenza o Soglia Punto nel tempo (episodio)
nl-NL Dutch (Netherlands) Legionella pneumophila Ag:aanwezigheid:moment:onderste luchtwegen:ordinaal:immunofluorescentie
Synonyms: antigeen IF onderste ademhalingsstelsel; systema respiratorium inferior systema respiratorium; ademhalingsstelsel
zh-CN Chinese (China) 嗜肺军团菌 抗原:存在情况或阈值:时间点:呼吸系统标本.下:序数型:免疫荧光法
Synonyms: Ag Ag IF DFA IFA法;IF法;抗补体免疫荧光法;时间分辨荧光法;荧光原位杂交技术;荧光原位杂交法;荧光抗体 下 下的 下部 低级 低级的 供检查用的材料;待检物;待试验物;样品;样本;试料;试样 依次型;分类顺序型;定性的;序数型（或称等级型）;性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型 军团 军团菌属 受检物 呼吸系统（呼吸道）标本.下;下呼吸系统标本;下呼吸道标本 呼吸道标本（样品、样本）;呼吸系统标本（样品、样本） 嗜肺军团菌 Ag 嗜肺性 存在情况;存在;存在与否;是否存在;阈值;界值;界限;阀值;临界值;存在情况（存在、存在与否、是否存在）或阈值（界值、界限、阀值、临界值） 微生物学;微生物学试验;微生物学试验（培养、DNA、抗原及抗体） 抗原免疫荧光检测 抗原免疫荧光测定 时刻;随机;随意;瞬间 样品 样本 直接免疫荧光分析 直接免疫荧光检测 直接免疫荧光测定 试样 较低 较低的

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=89594-6