LOINCActiveBoth

LOINC Code 45162-5: E. coli O157 Ag LA Ql (Isol)

45162-5 is a LOINC code used to identify E. coli O157 Ag LA Ql (Isol) 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 O157 Ag. It is commonly used with the system or sample type Isolate.

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 Escherichia coli O157 Ag. It is commonly used with the system or sample type Isolate.

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: LA

What it does not mean

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

Key facts

  • Escherichia coli O157 Ag [Presence] in Isolate by Latex agglutination
  • Escherichia coli O157 Ag
  • Antigen; Antigens; E coli; E coli O157; ID; Infectious Disease; InfectiousDisease; Islt; Isol; LAT; Latex agglutination; Microbiology; o002; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen

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 O157 Ag LA Ql (Isol)Escherichia coli O157 Ag [Presence] in Isolate by Latex agglutinationE coli O157 Ag Islt Ql LAEscherichia coli O157 AgMICROEscherichia coli O157 antigenPrThr

Frequently asked questions

Code details

Code45162-5
SystemLOINC
Display nameE. coli O157 Ag LA Ql (Isol)
DescriptionEscherichia coli O157 Ag
Short nameE coli O157 Ag Islt Ql LA
ComponentEscherichia coli O157 Ag
PropertyPrThr
TimingPt
System (specimen)Isolate
ScaleOrd
MethodLA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.56

Consumer names

Escherichia coli O157 antigen

Part names

Escherichia coli O157 AgPrThrPtIsolateOrdLAPresence or ThresholdPoint in time (spot)Latex agglutination

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 45162-5 | HealthAssure