LOINCActiveBoth

LOINC Code 100845-7: Neurofascin155 IgG4 FC Ql (S)

100845-7 is a LOINC code used to identify Neurofascin155 IgG4 FC Ql (S) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Neurofascin155 Ab.IgG4. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Neurofascin155 Ab.IgG4. It is commonly used with the system or sample type Ser.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: Flow cytometry

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Neurofascin155 IgG4 Ab [Presence] in Serum by Flow cytometry (FC)
  • Neurofascin155 Ab.IgG4
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dynamic; FC; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; Serum; SR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Neurofascin155 IgG4 FC Ql (S)Neurofascin155 IgG4 Ab [Presence] in Serum by Flow cytometry (FC)Neurofascin155 IgG4 Ser Ql FCNeurofascin155 Ab.IgG4SERONeurofascin155 IgG4 antibody, BloodPrThr

Frequently asked questions

Code details

Code100845-7
SystemLOINC
Display nameNeurofascin155 IgG4 FC Ql (S)
DescriptionNeurofascin155 Ab.IgG4
Short nameNeurofascin155 IgG4 Ser Ql FC
ComponentNeurofascin155 Ab.IgG4
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodFlow cytometry
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.73
Last changed2.73

Consumer names

Neurofascin155 IgG4 antibody, Blood

Part names

Neurofascin155 Ab.IgG4PrThrPtSerOrdFlow cytometryPresence or ThresholdPoint in time (spot)SerumFlow cytometry (FC)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.