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.

LOINCActiveBoth

LOINC Code 5381-9: Thyroglobulin Ab LA (S) [Titer]

Name: LOINC Code 5381-9: Thyroglobulin Ab LA (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

5381-9 is a LOINC code used to identify Thyroglobulin Ab LA (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 Thyroglobulin Ab. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Thyroglobulin 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
Method: LA

What it does not mean

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

Key facts

Thyroglobulin Ab [Titer] in Serum by Latex agglutination
Thyroglobulin Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Antithyroglob; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); Endocrine; Endocrinology; Hashimoto's thyroiditis; LAT; Latex agglutination; Point in time; Random; Serology; Serum; SmQn; SR; Tg; TgAbs; Thyglobulin; Thyroglbn; Thyroglob; Titer; Titered; Titre; Ttr; Tumor marker; UniversalLabOrders

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Thyroglobulin Ab LA (S) [Titer] (5381-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Thyroglobulin Ab LA (S) [Titer]Thyroglobulin Ab [Titer] in Serum by Latex agglutinationThyroglob Ab Titr Ser LAThyroglobulin AbSEROThyroglobulin antibody, BloodTitr

Frequently asked questions

Code details

Code5381-9

SystemLOINC

Display nameThyroglobulin Ab LA (S) [Titer]

DescriptionThyroglobulin Ab

Short nameThyroglob Ab Titr Ser LA

ComponentThyroglobulin Ab

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodLA

ClassSERO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.75

Consumer names

Thyroglobulin antibody, Blood

Part names

Thyroglobulin AbTitrPtSerSemiQnLATiterPoint in time (spot)SerumLatex agglutination

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.