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 20811-6: E. coli Culture FDA method Ql (Specimen)

Name: LOINC Code 20811-6: E. coli Culture FDA method Ql (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.850Z

20811-6 is a LOINC code used to identify E. coli Culture FDA method Ql (Specimen) 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 Escherichia coli. It is commonly used with the system or sample type XXX.

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 Escherichia coli. It is commonly used with the system or sample type XXX.

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: Culture.FDA method

What it does not mean

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

Key facts

Escherichia coli [Presence] in Specimen by Culture FDA method
Escherichia coli
C&S; Cult; Cult FDA; Cultures; E coli; ID; Infectious Disease; InfectiousDisease; Microbiology; Misc; Miscellaneous; o002; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; To be specified in another part of the message; Unspecified

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

E. coli Culture FDA method Ql (Specimen)Escherichia coli [Presence] in Specimen by Culture FDA methodE coli Spec Ql Cult FDAEscherichia coliMICROEscherichia coli culture, SpecimenPrThr

Frequently asked questions

Code details

Code20811-6

SystemLOINC

Display nameE. coli Culture FDA method Ql (Specimen)

DescriptionEscherichia coli

Short nameE coli Spec Ql Cult FDA

ComponentEscherichia coli

PropertyPrThr

TimingPt

System (specimen)XXX

ScaleOrd

MethodCulture.FDA method

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.69

Consumer names

Escherichia coli culture, Specimen

Part names

Escherichia coliPrThrPtXXXOrdCulture.FDA methodPresence or ThresholdPoint in time (spot)Culture FDA method

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.