LOINCActiveBoth

LOINC Code 40643-9: L. borgpetersenii sv Ballum Ab Aggl (S) [Titer]

40643-9 is a LOINC code used to identify L. borgpetersenii sv Ballum Ab Aggl (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 Leptospira borgpetersenii serovar Ballum Ab. It is commonly used with the system or sample type Ser.

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 Leptospira borgpetersenii serovar Ballum 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
  • Method: Aggl

What it does not mean

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

Key facts

  • Leptospira borgpetersenii sv Ballum Ab [Titer] in Serum by Agglutination
  • Leptospira borgpetersenii serovar Ballum Ab
  • ABS; Aby; Agg; Agglut; Agglutination; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; L borgp; L borgp Ball; L borgpetersenii; Leptospirosis; 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. borgpetersenii sv Ballum Ab Aggl (S) [Titer]Leptospira borgpetersenii sv Ballum Ab [Titer] in Serum by AgglutinationL borgp Ball Ab Titr Ser AgglLeptospira borgpetersenii serovar Ballum AbMICROLeptospira borgpetersenii serovar ballum antibody, BloodTitr

Frequently asked questions

Code details

Code40643-9
SystemLOINC
Display nameL. borgpetersenii sv Ballum Ab Aggl (S) [Titer]
DescriptionLeptospira borgpetersenii serovar Ballum Ab
Short nameL borgp Ball Ab Titr Ser Aggl
ComponentLeptospira borgpetersenii serovar Ballum Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodAggl
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Leptospira borgpetersenii serovar ballum antibody, Blood

Part names

Leptospira borgpetersenii serovar Ballum AbTitrPtSerSemiQnAgglLeptospira borgpetersenii sv Ballum AbTiterPoint in time (spot)SerumAgglutination

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.