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 47321-5: Baker's yeast IgG IA Qn (S)

Name: LOINC Code 47321-5: Baker's yeast IgG IA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:32.260Z

47321-5 is a LOINC code used to identify Baker's yeast IgG IA 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 Saccharomyces cerevisiae Ab.IgG. 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 Saccharomyces cerevisiae Ab.IgG. 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: IA

What it does not mean

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

Key facts

Baker's yeast IgG Ab [Units/volume] in Serum by Immunoassay
Saccharomyces cerevisiae Ab.IgG
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; ASCA; Autoantibodies; Autoantibody; Bakers yeast; Baker's yeast; Crohn disease; EIA; ELFA; ELISA; Enzyme immunoassay; f045; f403; f45; IAA; Immune globulin G; Immunoglobulin G; MEIA; Point in time; QNT; Quan; Quant; Quantitative; Random; SCA; Serum; SR; SUDS; Yeast

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

Baker's yeast IgG IA Qn (S)Baker's yeast IgG Ab [Units/volume] in Serum by ImmunoassayBaker's yeast IgG Qn IASaccharomyces cerevisiae Ab.IgGALLERGYBaker's yeast IgG antibodyACnc

Frequently asked questions

Code details

Code47321-5

SystemLOINC

Display nameBaker's yeast IgG IA Qn (S)

DescriptionSaccharomyces cerevisiae Ab.IgG

Short nameBaker's yeast IgG Qn IA

ComponentSaccharomyces cerevisiae Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassALLERGY

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.19

Last changed2.73

Consumer names

Baker's yeast IgG antibody

Part names

Saccharomyces cerevisiae Ab.IgGACncPtSerQnIABaker's yeast (Saccharomyces cerevisiae) IgGArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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.