LOINCActiveBoth

LOINC Code 80373-4: H. pylori Ag IA.rapid Ql (Stl)

80373-4 is a LOINC code used to identify H. pylori Ag IA.rapid 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 Helicobacter pylori 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 Helicobacter pylori 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.rapid

What it does not mean

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

Key facts

  • Helicobacter pylori Ag [Presence] in Stool by Rapid immunoassay
  • Helicobacter pylori Ag
  • This term was created for, but is not limited in use to, the bioMerieux bioNexia H. pylori Ag, which is intended for the qualitative detection of Helicobacter pylori antigen in human stool specimens and the loss of Helicobacter pylori antigen following eradication treatment. The bioNexia assay takes 10-15 minutes to run once the sample has been applied to the sample well.
  • Antigen; Antigens; Bowel movement; C pylori; Campylobacter pylori; EIA; ELFA; ELISA; Enzyme immunoassay; Faecal; Faeces; Fecal; Feces; Gastro; Gastroenterology; GI; H pyl; H pylori; IAA; 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

H. pylori Ag IA.rapid Ql (Stl)Helicobacter pylori Ag [Presence] in Stool by Rapid immunoassayH pylori Ag Stl Ql IA.rapidHelicobacter pylori AgMICROHelicobacter pylori antigen, StoolPrThr

Frequently asked questions

Code details

Code80373-4
SystemLOINC
Display nameH. pylori Ag IA.rapid Ql (Stl)
DescriptionHelicobacter pylori Ag
Short nameH pylori Ag Stl Ql IA.rapid
ComponentHelicobacter pylori Ag
PropertyPrThr
TimingPt
System (specimen)Stool
ScaleOrd
MethodIA.rapid
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.73

Consumer names

Helicobacter pylori antigen, Stool

Part names

Helicobacter pylori AgPrThrPtStoolOrdIA.rapidPresence or ThresholdPoint in time (spot)Rapid 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.