LOINCActiveBoth

LOINC Code 29905-7: E. histolytica Ag IA Ql (Stl)

29905-7 is a LOINC code used to identify E. histolytica Ag IA Ql (Stl) 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 Entamoeba histolytica Ag. It is commonly used with the system or sample type Stool.

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 Entamoeba histolytica Ag. It is commonly used with the system or sample type Stool.

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

  • Entamoeba histolytica Ag [Presence] in Stool by Immunoassay
  • Entamoeba histolytica Ag
  • Ameba; Amebiasis; Amebic; Amoeba; Antigen; Antigens; Bowel movement; E histolyt; E histolytica; EIA; ELFA; ELISA; Enzyme immunoassay; Faecal; Faeces; Fecal; Feces; IAA; ID; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Stl; Stool = Fecal; 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. histolytica Ag IA Ql (Stl)Entamoeba histolytica Ag [Presence] in Stool by ImmunoassayE histolyt Ag Stl Ql IAEntamoeba histolytica AgMICROEntamoeba histolytica antigen, StoolPrThr

Frequently asked questions

Code details

Code29905-7
SystemLOINC
Display nameE. histolytica Ag IA Ql (Stl)
DescriptionEntamoeba histolytica Ag
Short nameE histolyt Ag Stl Ql IA
ComponentEntamoeba histolytica Ag
PropertyPrThr
TimingPt
System (specimen)Stool
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.73

Consumer names

Entamoeba histolytica antigen, Stool

Part names

Entamoeba histolytica AgPrThrPtStoolOrdIAPresence or ThresholdPoint in time (spot)Immunoassay

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 29905-7 | HealthAssure