LOINC
Version 2.73

100845-7Neurofascin155 IgG4 Ab [Presence] in Serum by Flow cytometry (FC)Active

Part Description

LP32397-9   Ab.IgG4
IgG4 is the least common subtype of IgG, and it has a variety of functions. In the context of allergic disease it is thought to have an immune-inhibitory role in preventing anaphylaxis and is commonly known as a "blocking" antibody. IgG4 binding to an allergen can compete with IgE-mediated binding, thereby inhibiting the activation of mast cells and basophils and IgE-mediated presentation to T-cells. Measuring IgG4 and its ratio to IgE has a role in monitoring allergen specific immunotherapy [PMID:26023323]. IgG4 is also thought to have a role in autoimmunity and be involved in a less defined entity known as IgG4-Related Disease, a chronic immune-mediated fibroinflammatory disorder that often manifests with tumor-like masses .[https://www.merckmanuals.com/professional/musculoskeletal-and-connective-tissue-disorders/igg4-related-disease/igg4-related-disease] Source: Regenstrief LOINC

Fully-Specified Name

Component
Neurofascin155 Ab.IgG4
Property
PrThr
Time
Pt
System
Ser
Scale
Ord
Method
Flow cytometry

Additional Names

Short Name
Neurofascin155 IgG4 Ser Ql FC
Display Name
Neurofascin155 IgG4 FC Ql (S)
Consumer Name Alpha
Neurofascin155 IgG4 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 2.73
Last Updated
Version 2.73
Order vs. Observation
Both

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=100845-7