LOINCActiveObservation

LOINC Code 99001-0: Leptospira weilii sv Celledoni Ab Aggl (S) [Titer]

99001-0 is a LOINC code used to identify Leptospira weilii sv Celledoni 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 weilii serovar Celledoni 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 Leptospira weilii serovar Celledoni 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: Observation
  • Method: Aggl

What it does not mean

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

Key facts

  • Leptospira weilii sv Celledoni Ab [Titer] in Serum by Agglutination
  • Leptospira weilii serovar Celledoni Ab
  • ABS; Aby; Agg; Agglut; Agglutination; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; L weilii Celledoni; 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

Leptospira weilii sv Celledoni Ab Aggl (S) [Titer]Leptospira weilii sv Celledoni Ab [Titer] in Serum by AgglutinationL weilii Celledoni Ab Titr Ser AgglLeptospira weilii serovar Celledoni AbMICROLeptospira weilii sv Celledoni antibody, BloodTitr

Frequently asked questions

Code details

Code99001-0
SystemLOINC
Display nameLeptospira weilii sv Celledoni Ab Aggl (S) [Titer]
DescriptionLeptospira weilii serovar Celledoni Ab
Short nameL weilii Celledoni Ab Titr Ser Aggl
ComponentLeptospira weilii serovar Celledoni Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodAggl
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.75

Consumer names

Leptospira weilii sv Celledoni antibody, Blood

Part names

Leptospira weilii serovar Celledoni AbTitrPtSerSemiQnAgglTiterPoint 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.