LOINCActiveObservation

LOINC Code 105619-1: C. diphtheriae Cx Ql (Throat)

105619-1 is a LOINC code used to identify C. diphtheriae 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 Corynebacterium diphtheriae. It is commonly used with the system or sample type Thrt.

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 Corynebacterium diphtheriae. 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: Observation
  • Method: Culture

What it does not mean

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

Key facts

  • Corynebacterium diphtheriae [Presence] in Throat by Culture
  • Corynebacterium diphtheriae
  • C diphtheriae; C&S; Cult; Cultures; Diphtheria; Diptheria; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Throat; 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.

Common synonyms

C. diphtheriae Cx Ql (Throat)Corynebacterium diphtheriae [Presence] in Throat by CultureC diphtheriae Throat Ql CultCorynebacterium diphtheriaeMICROCorynebacterium diphtheriae culture, ThroatPrThr

Frequently asked questions

Code details

Code105619-1
SystemLOINC
Display nameC. diphtheriae Cx Ql (Throat)
DescriptionCorynebacterium diphtheriae
Short nameC diphtheriae Throat Ql Cult
ComponentCorynebacterium diphtheriae
PropertyPrThr
TimingPt
System (specimen)Thrt
ScaleOrd
MethodCulture
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

Corynebacterium diphtheriae culture, Throat

Part names

Corynebacterium diphtheriaePrThrPtThrtOrdCulturePresence 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.

LOINC Code 105619-1 | HealthAssure