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.

LOINCActiveObservation

LOINC Code 50999-2: L. donovani IgG and IgM (S) [Interp]

Name: LOINC Code 50999-2: L. donovani IgG and IgM (S) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:35.011Z

50999-2 is a LOINC code used to identify L. donovani IgG and IgM (S) [Interp] 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 Leishmania donovani Ab.IgG & IgM. 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 Leishmania donovani Ab.IgG & 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: Observation

What it does not mean

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

Key facts

Leishmania donovani IgG and IgM [Interpretation] in Serum
Leishmania donovani Ab.IgG & IgM
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; IgG+IgM; Immune globulin G; Immune globulin M; Immunoglobulin G; Immunoglobulin M; Impression; Impression/interpretation of study; Impressions; Infectious Disease; InfectiousDisease; Interp; Interpretation; L donovani; Leishmaniasis; Leishmaniosis; Microbiology; Nominal; Point in time; Random; Serum; SR

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

L. donovani IgG and IgM (S) [Interp]Leishmania donovani IgG and IgM [Interpretation] in SerumL donovani IgG+IgM Ser-ImpLeishmania donovani Ab.IgG & IgMMICROLeishmania donovani IgG and IgM antibodies, BloodImp

Frequently asked questions

Code details

Code50999-2

SystemLOINC

Display nameL. donovani IgG and IgM (S) [Interp]

DescriptionLeishmania donovani Ab.IgG & IgM

Short nameL donovani IgG+IgM Ser-Imp

ComponentLeishmania donovani Ab.IgG & IgM

PropertyImp

TimingPt

System (specimen)Ser

ScaleNom

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.73

Consumer names

Leishmania donovani IgG and IgM antibodies, Blood

Part names

Leishmania donovani Ab.IgG & IgMImpPtSerNomLeishmania donovani Ab.IgG and IgMImpression/interpretation of studyPoint 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.