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.

LOINCOrder

LOINC Code 109475-4: GABABR IgG (CSF) [Measurement]

Name: LOINC Code 109475-4: GABABR IgG (CSF) [Measurement]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:21.042Z

109475-4 is a LOINC code used to identify GABABR IgG (CSF) [Measurement] 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 Gamma aminobutyrate B receptor 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 Gamma aminobutyrate B receptor 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: TRIAL
Order vs observation: Order

What it does not mean

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

Key facts

GABABR IgG Ab [Measurement] in Cerebral spinal fluid

Gamma aminobutyrate B receptor Ab.IgG

This term is intended to collate similar measurements for the LOINC SNOMED CT Collaboration in an ontological view. Additionally, it can be used to communicate a laboratory order, either alone or in combination with specimen or other information in the order. It may NOT be used to report back the measured patient value. [https//lo.inc/ce2mb6]

4-aminobutanoic acid; 4-aminobutyrate; 4-aminobutyric acid; ABS; Aby; Aminobutric; Aminobutyric; Amino-n-butyrate; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; GABA; GABABR; GABABR Ab; Gamma aminobutyric acid; Gamma amino-butyric acid; Gamma amino-n-butyrate; Gamma amino-n-butyric acid; Immune globulin G; Immunoglobulin G; Lab orders; Msmt; Piperidic acid; Rec; Recept; Receptors; Recp; Recptr; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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

GABABR IgG (CSF) [Measurement]GABABR IgG Ab [Measurement] in Cerebral spinal fluidGABABR IgG Msmt CSFGamma aminobutyrate B receptor Ab.IgGLABORDERS.ONTOLOGYGABABR IgG antibody, Spinal fluid{Measurement}

Frequently asked questions

Code details

Code109475-4

SystemLOINC

Display nameGABABR IgG (CSF) [Measurement]

DescriptionGamma aminobutyrate B receptor Ab.IgG

Short nameGABABR IgG Msmt CSF

ComponentGamma aminobutyrate B receptor Ab.IgG

Property{Measurement}

Timing-

System (specimen)CSF

Scale-

ClassLABORDERS.ONTOLOGY

StatusTRIAL

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.81

Last changed2.81

Consumer names

GABABR IgG antibody, Spinal fluid

Part names

Gamma aminobutyrate B receptor Ab.IgG{Measurement}-CSFGABABR IgGMeasurementCerebral spinal fluid

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.