LOINC
Version 2.73

93868-8AMPAR2 Ab [Presence] in Serum by Cell binding immunofluorescent assayActive

Part Descriptions

LP229975-0   Alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate receptor 2
Alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptor 1 (AMPAR1) and AMPA receptor 2 (AMPAR2) antibodies target the AMPA receptor, an ionotropic glutamate receptor and key excitatory neurotransmitter. AMPA receptors are comprised of different combinations of four glutamate receptor subunits called GluA1-GluA4 (also known as GluR1-GluR4 and GluR-A to GluR-D). They are vital for brain development and function, such as memory and cognitive development. Detection of antineuronal autoantibodies against AMPA receptors aids in the diagnosis of autoimmune encephalopathies, especially limbic encephalitis, and related conditions.[PMCID:PMC4478035] The presence of AMPA antibodies may also indicate an undiscovered tumor in the thymus, lung or breast.[PMID:23983888] The neurological symptoms associated with AMPA receptor 1 antibodies include altered mental status, convulsions, memory loss amnesia, auditory hallucinations, limbic encephalitis, abnormal behavior, schizophrenia, dizziness and hyperthermia. The neurological symptoms associated with AMPA receptor 2 antibodies include seizures, short-term memory loss, limbic encephalitis, altered mental status, chorea and facial dyskinesia.[PMID:24707504] Source: Regenstrief LOINC

LP269367-1   CBA IFA
In cell binding assays or cell-based assays (CBA) also known as cell-based immunoassays, the DNA coding for a particular antigen is transfected into cultured cells, which are then used directly as substrate for antibody detection by immunofluorescence. The advantage of CBA IFA over conventional immunoassays is that purification and stability of the antigen is not required and they provide an in vivo substrate. Source: Regenstrief LOINC

Fully-Specified Name

Component
Alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate receptor 2 Ab
Property
PrThr
Time
Pt
System
Ser
Scale
Ord
Method
CBA IFA

Additional Names

Short Name
AMPAR2 Ab Ser Ql CBA IFA
Display Name
AMPAR2 Ab Cell binding immunofluorescent assay Ql (S)
Consumer Name Alpha
AMPAR2 antibody, Blood

Example Answer List LL360-9

Source: Regenstrief Institute

Answer Code Score Answer ID
Positive Copyright http://snomed.info/sct ID:10828004 Positive (qualifier value) LA6576-8
Negative Copyright http://snomed.info/sct ID:260385009 Negative (qualifier value) LA6577-6

Basic Attributes

Class
SERO
Type
Laboratory
First Released
Version 2.67
Last Updated
Version 2.69
Order vs. Observation
Both

Member of these Groups

LG50946-9 Alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate receptor 2 Ab|PrThr|Pt|ANYBldSerPl

Language Variants Get Info

zh-CNChinese (China)
Alpha-氨基-3-羟基-5-甲基-4-异噁唑丙酸受体 2 抗体:存在情况或阈值:时间点:血清:序数型:CBA IFA
fr-FRFrench (France)
AMPA récepteur 2 anticorps:Présence/Seuil:Ponctuel:Sérum:Qualitatif:Immunofluorescence CBA
it-ITItalian (Italy)
Recettore tipo 2 per alfa-amino-3-idrossi-5metil-4-isoxazolepropionato Ab:PrThr:Pt:Siero:Ord:CBA IFA
es-MXSpanish (Mexico)
Receptor 2 Ab de alfa-amino-3-hidroxi-5-metil-4-isoxazolpropionato:Presencia o umbral:Punto temporal:Suero:Ordinal:Ensayo inmunofluorescente de unión a células
es-ESSpanish (Spain)
Receptor 2 de Alfa-amino-3-hidroxi-5-metil-4-isoxazolepropionato Anticuerpos:PrThr:Punto temporal:Suero:Ord:CBA IFA (inmunofluorescencia indirecta de estudio basqado en células)

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=93868-8