LOINCActiveBoth

LOINC Code 53709-2: Glial nuclear type 1 Ab (S) [Titer]

53709-2 is a LOINC code used to identify Glial nuclear type 1 Ab (S) [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 Glial nuclear type 1 Ab. 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 Glial nuclear type 1 Ab. 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

What it does not mean

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

Key facts

Glial nuclear type 1 Ab [Titer] in Serum
Glial nuclear type 1 Ab
Glial Nuclear Antibody (AGNA) Type 1 antibody is a marker found in paraneoplastic syndrome associated with small cell lung carcinoma (SCLC). It is also closely associated with paraneoplastic Lambert-Eaton Myasthenia Syndrome (LEMS). There appears to be a tight association between AGNA and voltage-gated calcium channel antibodies in patients with SCLC. Patients with AGNA have characteristic nuclear staining of the Bergmann glia in the Purkinje cell layer of the cerebellum. Information from "Paraneoplastic limbic encephalitis associated with potassium channel antibodiesvalue of anti-glial nuclear antibodies in identifying the tumour" by L. Zuliani, A. Saiz, B. Tavolato, B. Giometto, A. Vincent and Francesc Graus, JNNPm 2007; 78; p. 204-205.
ABS; Aby; AGNA; AGNA-1; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); Glial nuc type 1; i; Lambert-Eaton myasthenic syndrome; Nuc; Paraneoplastic Antibody; Paraneoplastic syndrome; Point in time; Random; Serology; Serum; SmQn; Sox1; Sox1 nuclear antigen; SR; 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

Glial nuclear type 1 Ab (S) [Titer]Glial nuclear type 1 Ab [Titer] in SerumGlial nuc type 1 Ab Titr SerGlial nuclear type 1 AbSEROGlial nuclear type 1 antibody, BloodTitr

Frequently asked questions

Code details

Code53709-2
SystemLOINC
Display nameGlial nuclear type 1 Ab (S) [Titer]
DescriptionGlial nuclear type 1 Ab
Short nameGlial nuc type 1 Ab Titr Ser
ComponentGlial nuclear type 1 Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassSERO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.75

Consumer names

Glial nuclear type 1 antibody, Blood

Part names

Glial nuclear type 1 AbTitrPtSerSemiQnGlial nuc type 1 AbTiterPoint in time (spot)Serum

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.

LOINC Code 53709-2 | HealthAssure