LOINCActiveBoth

LOINC Code 39019-5: E. coli O157:H7 Ag IA Ql (Raw milk)

39019-5 is a LOINC code used to identify E. coli O157:H7 Ag IA Ql (Raw milk) 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:H7 Ag. It is commonly used with the system or sample type Mlk.raw.

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 O157:H7 Ag. It is commonly used with the system or sample type Mlk.raw.

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: IA

What it does not mean

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

Key facts

Escherichia coli O157H7 Ag [Presence] in Raw milk by Immunoassay
Escherichia coli O157H7 Ag
Antigen; Antigens; E coli; E coli O157; E coli O157H7; EIA; ELFA; ELISA; Enterohemorrhagic E. coli; Enzyme immunoassay; IAA; ID; Infectious Disease; InfectiousDisease; MEIA; Microbiology; o002; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RawMilk; Screen; SUDS

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:H7 Ag IA Ql (Raw milk)Escherichia coli O157:H7 Ag [Presence] in Raw milk by ImmunoassayE coli O157H7 Ag RawMilk Ql IAEscherichia coli O157:H7 AgMICROEscherichia coli O157:H7 antigen, Raw MilkPrThr

Frequently asked questions

Code details

Code39019-5
SystemLOINC
Display nameE. coli O157:H7 Ag IA Ql (Raw milk)
DescriptionEscherichia coli O157:H7 Ag
Short nameE coli O157H7 Ag RawMilk Ql IA
ComponentEscherichia coli O157:H7 Ag
PropertyPrThr
TimingPt
System (specimen)Mlk.raw
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.65

Consumer names

Escherichia coli O157:H7 antigen, Raw Milk

Part names

Escherichia coli O157:H7 AgPrThrPtMlk.rawOrdIAPresence or ThresholdPoint in time (spot)Raw milkImmunoassay

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 39019-5 | HealthAssure