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 31294-2: C. trachomatis B IgA Qn (S)

Name: LOINC Code 31294-2: C. trachomatis B IgA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

31294-2 is a LOINC code used to identify C. trachomatis B IgA Qn (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 Chlamydia trachomatis B 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 Chlamydia trachomatis B 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

Chlamydia trachomatis B IgA Ab [Units/volume] in Serum
Chlamydia trachomatis B Ab.IgA
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; C trac; C trach; C trach B; C tracho; C trachomatis; Chlam; Chlam trac; Chlamid; Chlamydia trachomatis type B; CT; ID; Immune globulin A; Immunoglobulin A; Infectious Disease; InfectiousDisease; LGV; Lymphogranuloma venereum; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Trachoma

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 C. trachomatis B IgA Qn (S) (31294-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

C. trachomatis B IgA Qn (S)Chlamydia trachomatis B IgA Ab [Units/volume] in SerumC trach B IgA Ser-aCncChlamydia trachomatis B Ab.IgAMICROChlamydia trachomatis B IgA antibody, BloodACnc

Frequently asked questions

Code details

Code31294-2

SystemLOINC

Display nameC. trachomatis B IgA Qn (S)

DescriptionChlamydia trachomatis B Ab.IgA

Short nameC trach B IgA Ser-aCnc

ComponentChlamydia trachomatis B Ab.IgA

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.07

Last changed2.69

Consumer names

Chlamydia trachomatis B IgA antibody, Blood

Part names

Chlamydia trachomatis B Ab.IgAACncPtSerQnChlamydia trachomatis B IgAArbitrary ConcentrationPoint 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.