77383-8

Influenza virus A Ag [Presence] in Bronchoalveolar lavage by Immunofluorescence

Active

Term Description

This term was created for, but not limited in use to, the Light Diagnostics, Respiratory Panel Viral Screening and Identification IFA kit, for the qualitative identification of Adenovirus, Influenza A, Influenza B, Parainfluenza 1, 2, 3, and Respiratory Syncytial virus in cell culture, which uses an indirect immunofluorescence technique for identifying viruses.
Source: Regenstrief LOINC

Part Description

LP14239-5   Influenza virus A
Influenza viruses, from the family Orthomyxoviridae, are enveloped negative-strand RNA viruses with segmented genomes containing seven to eight gene segments. Of the five genera in the family, only influenza A virus (IAV), influenza B and C are medically relevant to humans. Aquatic birds harboring avian IAV are the likely natural reservoir for all known IAV subtypes and are probably the original source of all human pandemic IAV strains. IAV maintained in wild birds have been associated with stable host switch events to novel hosts, including most often to domestic poultry but also to horses, swine, toothed whales and humans. The influenza virus life cycle begins with the binding of viral HA to host cell receptors. Endocytosis and HA-mediated fusion of the viral and cellular membranes occurs. Viral ribonucleoprotein complexes are released into the cytoplasm, travel to the nucleus, then are replicated and transcribed by the viral polymerase complex. The new viruses are formed and bud when the newly formed ribonucleicprotein complexes and structural proteins reach the plasma membrane. Further research is needed to better understand how IAVs switch hosts and the viral genetic changes that underlie human adaptation. IAV causes respiratory infections in humans ranging from asymptomatic to fatal. Pandemics are attributed to "novel" viruses which possess a viral hemagglutinin (HA) to which humans do not have immunity. PMID: 20542248 ] PMID: 25812763
Influenza viruses A and B are single-stranded RNA enveloped viruses belonging to the Orthomyxoviridae family. The symptoms of infection of Influenza A and B include fever, cough, sore throat, rhinorrhea, nasal congestion, headache, myalgia and malaise. Some patients may experience gastrointestinal symptoms including watery diarrhea, vomiting and abdominal pain. The influenza viruses spread rapidly in enclosed spaces with a documented rate of infection of 70% following a common source of exposure. Infection occurs in the respiratory epithelium in both the upper and lower respiratory tract, and the virus can be found in many specimen types, including nasal aspirates, nasal or nasopharyngeal swabs, throat swabs, sputum and tracheal aspirates. When infection rates reach epidemic proportions, hospitalization of children and elderly patients rises as does the mortality rates of elderly patients.(Manual of Clinical Microbiology, 11th edition, James H. Jorgensen; Karen C. Carroll; Guido Funke; Michael A Pfaller; Marie Louise Landry; Sandra S. Richter; David W. Warnock) Source: Regenstrief LOINC

Fully-Specified Name

Component

Influenza virus A Ag

Property

PrThr

Time

Pt

System

BAL

Scale

Ord

Method

IF

Additional Names

Short Name

FLUAV Ag BAL Ql IF

Display Name

FLUAV Ag IF Ql (BAL)

Consumer Name Alpha Get Info

Influenza A (Flu A) antigen, Bronchoalveolar lavage specimen

Example Answer List: LL360-9

Basic Attributes

Class

MICRO

Type

Laboratory

First Released

Version 2.52

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 Panels

Member of these Groups Get Info

Language Variants Get Info

Related Names

• ACIF
• Anticomplement Immunofluorescence
• Antigen
• Antigens
• Avian influenza
• Bird flu
• Bronchial alveolar lavage
• Bronchoalveolar lavage
• DFA
• FA
• FLUA
• FLUAV
• Fluorescent antibody
• Fluoresent
• FLUV
• Fowl plague
• ID
• IFA
• Immune fluorescence
• Immunoflour
• Immunofluor
• Immunofluorescence
• Infectious Disease
• InfectiousDisease
• Influ
• Influenza A
• Influenza A virus
• Lung
• Microbiology
• Ordinal
• Point in time
• PR
• Pulmonary
• Pulmonology
• Ql
• Qual
• Qualitative
• Random
• Respiratory
• Screen
• Time Resolved Fluorescence
• TRF

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

Requests to this service require a free LOINC username and password. Below is a sample of the possible capabilities. See the LOINC Terminology Service documentation for more information.

CodeSystem lookup

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=77383-8

Third Party Copyright

This material includes SNOMED Clinical Terms® (SNOMED CT®) which is used by permission of the International Health Terminology Standards Development Organisation (IHTSDO) under license. All rights reserved. SNOMED CT® was originally created by The College of American Pathologists. "SNOMED" and "SNOMED CT" are registered trademarks of the IHTSDO.

This material includes content from the US Edition to SNOMED CT, which is developed and maintained by the U.S. National Library of Medicine and is available to authorized UMLS Metathesaurus Licensees from the UTS Downloads site at https://uts.nlm.nih.gov.

Use of SNOMED CT content is subject to the terms and conditions set forth in the SNOMED CT Affiliate License Agreement. It is the responsibility of those implementing this product to ensure they are appropriately licensed and for more information on the license, including how to register as an Affiliate Licensee, please refer to http://www.snomed.org/snomed-ct/get-snomed-ct or info@snomed.org<mailto:info@snomed.org>. This may incur a fee in SNOMED International non-Member countries.

LOINC Copyright

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.