LOINCActiveBoth

LOINC Code 5391-8: T. gondii IgM IF [Titer]

5391-8 is a LOINC code used to identify T. gondii IgM IF [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 Toxoplasma gondii Ab.IgM. It is commonly used with the system or sample type Ser/Plas.

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.IgM. It is commonly used with the system or sample type Ser/Plas.

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: IF

What it does not mean

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

Key facts

  • Toxoplasma gondii IgM Ab [Titer] in Serum or Plasma by Immunofluorescence
  • Toxoplasma gondii Ab.IgM
  • ABS; Aby; ACIF; Antby; Anti; Antibodies; Antibody; Anticomplement Immunofluorescence; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immune globulin M; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SmQn; SR; T gondii; Time Resolved Fluorescence; Titer; Titered; Titre; Toxo; Toxoplasmosis; TRF; 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

T. gondii IgM IF [Titer]Toxoplasma gondii IgM Ab [Titer] in Serum or Plasma by ImmunofluorescenceT gondii IgM Titr SerPl IFToxoplasma gondii Ab.IgMMICROToxoplasma gondii IgM antibody, BloodTitr

Frequently asked questions

Code details

Code5391-8
SystemLOINC
Display nameT. gondii IgM IF [Titer]
DescriptionToxoplasma gondii Ab.IgM
Short nameT gondii IgM Titr SerPl IF
ComponentToxoplasma gondii Ab.IgM
PropertyTitr
TimingPt
System (specimen)Ser/Plas
ScaleSemiQn
MethodIF
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.75

Consumer names

Toxoplasma gondii IgM antibody, Blood

Part names

Toxoplasma gondii Ab.IgMTitrPtSer/PlasSemiQnIFToxoplasma gondii IgMTiterPoint in time (spot)Serum or PlasmaImmunofluorescence (IF)

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 5391-8 | HealthAssure