56990-5

Toxoplasma gondii IgG Ab avidity [Ratio] in Serum by Immunoassay

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Part Description

LP14252-8   Toxoplasma gondii
Toxoplasma gondii is an intestinal coccidium that multiplies within cats as definitive hosts as well as within many other mammals and birds as intermediate hosts. T. gondii reproduces sexually only in cats. It infects the intestinal epithelium and produces oocysts which are shed in the feces. Humans acquire infections most often by consumption of undercooked meat containing tissue cysts or food contaminated by cat feces. Less than 0.1 percent of human cases are acquired congenitally. Toxoplasmosis is minor and self-limiting in immunocompetent individuals who may be asymptomatic or present with fever, lymphadenopathy, muscle aches and headache. Toxoplasma may manifest as encephalitis in immunosuppressed individuals including patients with acquired immune deficiency syndrome (AIDS) and may lead to coma or death. T. gondii often infects the brain and retina in congenitally infected children. Mild symptoms include slightly diminished vision while severely diseased children exhibit a pattern of retinochoroiditis, hydrocephalus, convulsions and intracerebral calcifications. Ocular disease may also occur. Toxoplasma is diagnosed through serology and upon histologic examination of tissues. Prevention includes thorough cooking of meat and proper management of cats. Sulfadiazine and pyrimethamine can be used to treat acute cases. [NCBI Books:NBK7627] Source: Regenstrief LOINC

Fully-Specified Name

Component

Toxoplasma gondii Ab.IgG avidity

Property

Ratio

Time

Pt

System

Ser

Scale

Qn

Method

IA

Additional Names

Long Common Name

Toxoplasma gondii IgG Ab avidity [Ratio] in Serum by Immunoassay

Short Name

T gondii IgG Avidity Ser IA-Rto

Display Name

T. gondii IgG avidity IA (S) [Ratio]

Consumer Name Alpha Get Info

Toxoplasma gondii IgG avidity, Blood

Basic Attributes

Class

MICRO

Type

Laboratory

First Released

Version 2.29

Last Updated

Version 2.56

Change Reason

Property has been changed from ACnc to reflect the fact that avidity by definition is a ratio.; The EIA method, which was always intended to cover more than just enzyme-linked immunoassay and whose display name for the long common name has always been Immunoassay, was renamed IA in order to eliminate ambiguity about whether the method has a broader meaning than just enzyme-linked immunoassay. Likewise, EIA.rapid was renamed IA.rapid. These changes were approved by the Laboratory LOINC Committee in June 2016.

Order vs. Observation

Both

Formula (Readable)

Avidity % = (absorbance of avidity T gondii IgG well/absorbance of standard T gondii IgG well)x100

Member of these Panels

Language Variants Get Info

Related Names

• ABS
• Aby
• Antby
• Anti
• Antibodies
• Antibody
• Autoantibodies
• Autoantibody
• EIA
• ELFA
• ELISA
• Enzyme immunoassay
• IAA
• ID
• Immune globulin G
• Immunoglobulin G
• Infectious Disease
• InfectiousDisease
• MEIA
• Microbiology
• Point in time
• QNT
• Quan
• Quant
• Quantitative
• Random
• Ratios
• Rto
• Serum
• SR
• SUDS
• T gondii
• Toxo
• Toxoplasmosis

Example Units

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CodeSystem lookup

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=56990-5

LOINC Copyright

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 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.