95273-9
Aquaporin 4 water channel IgG Ab [Titer] in Serum by Cell binding immunofluorescent assay
Active
Part Descriptions
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,
LP39188-5 Aquaporin 4 water channel Ab.IgG
The water channel aquaporin 4 (AQP4) receptor regulates the water homeostasis in the central nervous system (CNS). Autoantibodies to the AQP4 receptor bind to the receptor and cause neuromyelitis optica (NMO) which is an idiopathic, severe, demyelinating disease of the CNS that primarily affects the optic nerve and spinal cord. Before the discovery of the AQP4 receptor antibody NMO was often misdiagnosed as a variant of multiple sclerosis (MS). With improved clinical laboratory tests and distinct immunological and pathological attributes the two diseases are less often confused. Distinguishing MS and NMO is especially important because they have different treatments. Treatment for NMO includes corticosteroids and plasmapheresis; typical medications used to treat MS, such as beta-interferon and glatiramer acetate are not effective against NMO. During the disease process, the aquaporin 4 receptor antibody binds to the aquaporin 4 receptor initiating the activation of complement, inflammatory demyelination and necrosis. Eighty to ninety percent of patients with NMO experience recurrent episodes of optic neuritis and myelitis. Many patients with NMO also have other autoimmune diseases including thyroiditis, systemic lupus erythematosus
and Sjogren's syndrome. PMID: 17706564 Detection of APQ4-IgG is indicative of a relapsing disease. Immediate treatment with immunosuppressive drugs reduces the frequency and disability of future attacks. http://labmed.ucsf.edu/labmanual/db/dataall/tests/1424.html
Source: Regenstrief LOINC
LOINC Names Get Info
- Fully-Specified Name
- Aquaporin 4 water channel Ab.IgG:
Titr: Pt: Ser: SemiQn: CBA IFA - Long Common Name
- Aquaporin 4 water channel IgG Ab [Titer] in Serum by Cell binding immunofluorescent assay
- Short Name
- AQP4 H2O channel IgG Titr Ser CBA IFA
- Display Name
- Aquaporin 4 water channel IgG Cell binding immunofluorescent assay (S) [Titer]
- Consumer Name Alpha Get Info
- Aquaporin 4 water channel IgG antibody, Blood
Part Model Get Info
- Component
- Aquaporin 4 water channel Ab.IgG
LP39188-5
- Analyte
- Aquaporin 4 water channel Ab.IgG
LP39188-5
- Component Numerator
- Aquaporin 4 water channel Ab.IgG
LP39188-5
- Component Numerator Core
- Aquaporin 4 water channel
LP102619-6
- Component Numerator Core Suffix
- Ab.IgG
LP32401-9
- Component Denominator
- NULL
- Component Denominator Core
- NULL
- Component Denominator Core Suffix
- NULL
- Challenge
- NULL
- Adjustment
- NULL
- Count
- NULL
- Property
- Titr
LP6881-9
- Time
- Pt
LP6960-1
- Time Core
- Pt
LP6960-1
- Time Modifier
- NULL
- System
- Ser
LP7567-3
- System Core
- Ser
LP7567-3
- Super System
- NULL
- Scale
- SemiQn
LP436123-6
- Method
- CBA IFA
LP269367-1
Basic Attributes
- Class
- SERO
- Type
- Laboratory
- First Released
- Version 2.68
- Last Updated
- Version 2.75 (MAJ)
- Order vs. Observation
- Both
Member of these Groups Get Info
| LOINC Group | Group Name |
|---|---|
| LG17838-0 | Aquaporin 4 water channel Ab.IgG| |
Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| cs-CZ | Czech (Czechia) | Akvaporin 4 IgG: |
| el-GR | Greek (Greece) | Δίαυλος ύδατος ακουαπορίνης 4 Αντισώματα IgG: Synonyms: CBA IFA Pt SERO Titr Ανοσοσφαιρίνη G Αντίσωμα Αντισώματα IgG Δίαυλος ύδατος ακουαπορίνης 4 Ημιποσοτική Νερό Ορός |
| es-ES | Spanish (Spain) | Receptor de Acuaporina 4 IgG: Synonyms: Semicuantitativo |
| es-MX | Spanish (Mexico) | Acuaporina 4 canal de agua Ab.IgG: |
| fr-FR | French (France) | Aquaporine 4 récepteur Ac IgG: |
| it-IT | Italian (Italy) | Acquaporina 4, canale idrico Ab.IgG: Synonyms: anticorpi IgG anticorpo Canale idrico dell''acquaporina 4 Fluorescenza indiretta degli anticorpi (IFA) Punto nel tempo (episodio) Siero Sierologia (anticorpi e la maggior parte degli ant Titolo |
| zh-CN | Chinese (China) | 水通道蛋白 4 受体 抗体.IgG: Synonyms: Ab.IgG; |
Example Units
| Unit | Source |
|---|---|
| {titer} | Example UCUM Units |
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.
LOINC Copyright
Copyright © 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://