LOINCActiveBoth

LOINC Code 41029-0: L. monocytogenes H1 Ab (S) [Titer]

41029-0 is a LOINC code used to identify L. monocytogenes H1 Ab (S) [Titer] 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 Listeria monocytogenes H1 Ab. It is commonly used with the system or sample type Ser.

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 Listeria monocytogenes H1 Ab. It is commonly used with the system or sample type Ser.

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

What it does not mean

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

Key facts

  • Listeria monocytogenes H1 Ab [Titer] in Serum
  • Listeria monocytogenes H1 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; L monocytog; L monocytog.H1; L monocytogenes; Listeriosis; Microbiology; Point in time; Random; Serum; SmQn; SR; Titer; Titered; Titre; Ttr

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

L. monocytogenes H1 Ab (S) [Titer]Listeria monocytogenes H1 Ab [Titer] in SerumL monocytog.H1 Ab Titr SerListeria monocytogenes H1 AbMICROListeria monocytogenes H1 antibody, BloodTitr

Frequently asked questions

Code details

Code41029-0
SystemLOINC
Display nameL. monocytogenes H1 Ab (S) [Titer]
DescriptionListeria monocytogenes H1 Ab
Short nameL monocytog.H1 Ab Titr Ser
ComponentListeria monocytogenes H1 Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.75

Consumer names

Listeria monocytogenes H1 antibody, Blood

Part names

Listeria monocytogenes H1 AbTitrPtSerSemiQnTiterPoint in time (spot)Serum

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 41029-0 | HealthAssure