What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 23999-6: Ganglioside GD1b IgG IA (CSF) [Titer]

Name: LOINC Code 23999-6: Ganglioside GD1b IgG IA (CSF) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:12.418Z

23999-6 is a LOINC code used to identify Ganglioside GD1b IgG IA (CSF) [Titer] 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 Ganglioside GD1b Ab.IgG. It is commonly used with the system or sample type CSF.

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 Ganglioside GD1b Ab.IgG. It is commonly used with the system or sample type CSF.

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: Observation
Method: IA

What it does not mean

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

Key facts

Ganglioside GD1b IgG Ab [Titer] in Cerebral spinal fluid by Immunoassay
Ganglioside GD1b Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); Disialolganglioside; Disialylganglioside; EIA; ELFA; ELISA; Enzyme immunoassay; GD1b; GD1b Gangl; IAA; Immune globulin G; Immunoglobulin G; MEIA; Point in time; Random; Serology; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; SUDS; Titer; Titered; Titre; Ttr

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

Ganglioside GD1b IgG IA (CSF) [Titer]Ganglioside GD1b IgG Ab [Titer] in Cerebral spinal fluid by ImmunoassayGD1b Gangl IgG Titr CSF IAGanglioside GD1b Ab.IgGSEROGanglioside GD1b IgG antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code23999-6

SystemLOINC

Display nameGanglioside GD1b IgG IA (CSF) [Titer]

DescriptionGanglioside GD1b Ab.IgG

Short nameGD1b Gangl IgG Titr CSF IA

ComponentGanglioside GD1b Ab.IgG

PropertyTitr

TimingPt

System (specimen)CSF

ScaleSemiQn

MethodIA

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0o

Last changed2.75

Consumer names

Ganglioside GD1b IgG antibody, Spinal fluid

Part names

Ganglioside GD1b Ab.IgGTitrPtCSFSemiQnIAGanglioside GD1b IgGTiterPoint in time (spot)Cerebral spinal fluidImmunoassay

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.