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 40945-8: Y. enterocolitica IgA Ql (S)

Name: LOINC Code 40945-8: Y. enterocolitica IgA Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

40945-8 is a LOINC code used to identify Y. enterocolitica 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 Yersinia enterocolitica 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 Yersinia enterocolitica 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

Yersinia enterocolitica IgA Ab [Presence] in Serum
Yersinia enterocolitica 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; Y enterocol; Y enterocolitica

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 Y. enterocolitica IgA Ql (S) (40945-8)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Y. enterocolitica IgA Ql (S)Yersinia enterocolitica IgA Ab [Presence] in SerumY enterocol IgA Ser QlYersinia enterocolitica Ab.IgAMICROYersinia enterocolitica IgA antibody, BloodPrThr

Frequently asked questions

Code details

Code40945-8

SystemLOINC

Display nameY. enterocolitica IgA Ql (S)

DescriptionYersinia enterocolitica Ab.IgA

Short nameY enterocol IgA Ser Ql

ComponentYersinia enterocolitica Ab.IgA

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.56

Consumer names

Yersinia enterocolitica IgA antibody, Blood

Part names

Yersinia enterocolitica Ab.IgAPrThrPtSerOrdYersinia enterocolitica 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.