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 22941-9: B. reaction wheal 2 days post 0.1 mL brucellin intradermal (Skin) [Diam]

Name: LOINC Code 22941-9: B. reaction wheal 2 days post 0.1 mL brucellin intradermal (Skin) [Diam]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.727Z

22941-9 is a LOINC code used to identify B. reaction wheal 2 days post 0.1 mL brucellin intradermal (Skin) [Diam] 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 Brucella reaction wheal^2D post 0.1 mL brucellin ID. It is commonly used with the system or sample type Skin.

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 Brucella reaction wheal^2D post 0.1 mL brucellin ID. It is commonly used with the system or sample type Skin.

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

Brucella reaction wheal [Diameter] --2 days post 0.1 mL brucellin intradermal
Brucella reaction wheal^2D post 0.1 mL brucellin ID
2D p .1mL Brucellin; After; Bangs disease; Bruc; Brucella skin test; Brucellosis; Contagious abortion; Dermatologic; Diameter; Epidermis; Identifier; Integument; Intradermal; Mediterranean fever; Point in time; PST; QNT; Quan; Quant; Quantitative; Random; React; Rx wheal; Rxn; Skin test; SKIN TESTS; Skn; Undulant fever

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

B. reaction wheal 2 days post 0.1 mL brucellin intradermal (Skin) [Diam]Brucella reaction wheal [Diameter] --2 days post 0.1 mL brucellin intradermalWheal 2D p .1mL Brucellin DiamBrucella reaction wheal^2D post 0.1 mL brucellin IDCHALSKINBrucella reaction wheal 2 days after 0.1 mL Brucellin Intradermal, SkinDiam

Frequently asked questions

Code details

Code22941-9

SystemLOINC

Display nameB. reaction wheal 2 days post 0.1 mL brucellin intradermal (Skin) [Diam]

DescriptionBrucella reaction wheal^2D post 0.1 mL brucellin ID

Short nameWheal 2D p .1mL Brucellin Diam

ComponentBrucella reaction wheal^2D post 0.1 mL brucellin ID

PropertyDiam

TimingPt

System (specimen)Skin

ScaleQn

ClassCHALSKIN

Example unitsmm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0n

Last changed2.42

Consumer names

Brucella reaction wheal 2 days after 0.1 mL Brucellin Intradermal, Skin

Part names

Brucella reaction wheal^2D post 0.1 mL brucellin IDDiamPtSkinQnDiameterPoint in time (spot)

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.