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 546-2: Streptococcus.beta-hemolytic Org specific cx Ql (Throat)

Name: LOINC Code 546-2: Streptococcus.beta-hemolytic Org specific cx Ql (Throat)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

546-2 is a LOINC code used to identify Streptococcus.beta-hemolytic Org specific cx Ql (Throat) 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 Streptococcus.beta-hemolytic. It is commonly used with the system or sample type Thrt.

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 Streptococcus.beta-hemolytic. It is commonly used with the system or sample type Thrt.

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: Organism specific culture

What it does not mean

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

Key facts

Streptococcus.beta-hemolytic [Presence] in Throat by Organism specific culture
Streptococcus.beta-hemolytic
Group A produces wide clear zone of hemolysis;group B produces narrow diffuse zone of hemolysis
B; B-Hem Strep; C&S; Cult; Cultures; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; Strep; Strept; Throat; UniversalLabOrders; Upper respiratory

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 Streptococcus.beta-hemolytic Org specific cx Ql (Throat) (546-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Streptococcus.beta-hemolytic Org specific cx Ql (Throat)Streptococcus.beta-hemolytic [Presence] in Throat by Organism specific cultureB-Hem Strep Throat Ql CultStreptococcus.beta-hemolyticMICROStreptococcus.beta-hemolytic culture, ThroatPrThr

Frequently asked questions

Code details

Code546-2

SystemLOINC

Display nameStreptococcus.beta-hemolytic Org specific cx Ql (Throat)

DescriptionStreptococcus.beta-hemolytic

Short nameB-Hem Strep Throat Ql Cult

ComponentStreptococcus.beta-hemolytic

PropertyPrThr

TimingPt

System (specimen)Thrt

ScaleOrd

MethodOrganism specific culture

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Streptococcus.beta-hemolytic culture, Throat

Part names

Streptococcus.beta-hemolyticPrThrPtThrtOrdOrganism specific culturePresence or ThresholdPoint in time (spot)Throat

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.