LOINCBoth

LOINC Code 47389-2: T. gondii IgG avidity Ql (S)

47389-2 is a LOINC code used to identify T. gondii IgG avidity 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.IgG avidity. 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 Toxoplasma gondii Ab.IgG avidity. 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: DISCOURAGED
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Toxoplasma gondii IgG Ab avidity [Presence] in Serum
  • Toxoplasma gondii Ab.IgG avidity
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; Immune globulin G; Immunoglobulin G; 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.

Common synonyms

T. gondii IgG avidity Ql (S)Toxoplasma gondii IgG Ab avidity [Presence] in SerumT gondii IgG Avidity Ser QlToxoplasma gondii Ab.IgG avidityMICROToxoplasma gondii IgG avidity, BloodPrThr

Frequently asked questions

Code details

Code47389-2
SystemLOINC
Display nameT. gondii IgG avidity Ql (S)
DescriptionToxoplasma gondii Ab.IgG avidity
Short nameT gondii IgG Avidity Ser Ql
ComponentToxoplasma gondii Ab.IgG avidity
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusDISCOURAGED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.56

Consumer names

Toxoplasma gondii IgG avidity, Blood

Part names

Toxoplasma gondii Ab.IgG avidityPrThrPtSerOrdToxoplasma gondii IgG AvidityPresence 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.

LOINC Code 47389-2 | HealthAssure