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 33459-9: T. gondii IgA Ql (S)

Name: LOINC Code 33459-9: T. gondii IgA Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

33459-9 is a LOINC code used to identify T. gondii IgA 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 Toxoplasma gondii Ab.IgA. 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 Toxoplasma gondii Ab.IgA. 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

Toxoplasma gondii IgA Ab [Presence] in Serum
Toxoplasma gondii Ab.IgA
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; Immune globulin A; Immunoglobulin A; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; T gondii; Toxo; Toxoplasmosis

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 T. gondii IgA Ql (S) (33459-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

T. gondii IgA Ql (S)Toxoplasma gondii IgA Ab [Presence] in SerumT gondii IgA Ser QlToxoplasma gondii Ab.IgAMICROToxoplasma gondii IgA antibody, BloodPrThr

Frequently asked questions

Code details

Code33459-9

SystemLOINC

Display nameT. gondii IgA Ql (S)

DescriptionToxoplasma gondii Ab.IgA

Short nameT gondii IgA Ser Ql

ComponentToxoplasma gondii Ab.IgA

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

Toxoplasma gondii IgA antibody, Blood

Part names

Toxoplasma gondii Ab.IgAPrThrPtSerOrdToxoplasma gondii IgAPresence or ThresholdPoint 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.