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 28612-0: Legionella sp IgM IF (S) [Titer]

Name: LOINC Code 28612-0: Legionella sp IgM IF (S) [Titer]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

28612-0 is a LOINC code used to identify Legionella sp IgM IF (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 Legionella sp Ab.IgM. 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 Legionella sp Ab.IgM. 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: IF

What it does not mean

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

Key facts

Legionella sp IgM Ab [Titer] in Serum by Immunofluorescence
Legionella sp 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; Legion; Legionela; Microbiology; Point in time; Random; Serum; SmQn; species; spp; SR; Time Resolved Fluorescence; Titer; Titered; Titre; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Legionella sp IgM IF (S) [Titer] (28612-0)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Legionella sp IgM IF (S) [Titer]Legionella sp IgM Ab [Titer] in Serum by ImmunofluorescenceLegionella IgM Titr Ser IFLegionella sp Ab.IgMMICROLegionella sp IgM antibody, BloodTitr

Frequently asked questions

Code details

Code28612-0

SystemLOINC

Display nameLegionella sp IgM IF (S) [Titer]

DescriptionLegionella sp Ab.IgM

Short nameLegionella IgM Titr Ser IF

ComponentLegionella sp Ab.IgM

PropertyTitr

TimingPt

System (specimen)Ser

ScaleSemiQn

MethodIF

ClassMICRO

Example unitstiter

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.75

Consumer names

Legionella sp IgM antibody, Blood

Part names

Legionella sp Ab.IgMTitrPtSerSemiQnIFLegionella sp IgMTiterPoint in time (spot)SerumImmunofluorescence (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.