LOINCActiveBoth

LOINC Code 22403-0: L. interrogans sv Hardjo Ab (S) [Titer]

22403-0 is a LOINC code used to identify L. interrogans sv Hardjo 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 Leptospira interrogans serovar Hardjo 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 interrogans serovar Hardjo 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

  • Leptospira interrogans sv Hardjo Ab [Titer] in Serum
  • Leptospira interrogans serovar Hardjo Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ID; Infectious Disease; InfectiousDisease; L inter; L inter Hard; L interrogans; Leptospirosis; Microbiology; Point in time; Random; Serum; SmQn; SR; Titer; Titered; Titre; Ttr; Vet; Veterinary

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. interrogans sv Hardjo Ab (S) [Titer]Leptospira interrogans sv Hardjo Ab [Titer] in SerumL inter Hard Ab Titr SerLeptospira interrogans serovar Hardjo AbMICROLeptospira interrogans serovar Hardjo antibody, BloodTitr

Frequently asked questions

Code details

Code22403-0
SystemLOINC
Display nameL. interrogans sv Hardjo Ab (S) [Titer]
DescriptionLeptospira interrogans serovar Hardjo Ab
Short nameL inter Hard Ab Titr Ser
ComponentLeptospira interrogans serovar Hardjo Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.75

Consumer names

Leptospira interrogans serovar Hardjo antibody, Blood

Part names

Leptospira interrogans serovar Hardjo AbTitrPtSerSemiQnLeptospira interrogans sv Hardjo AbTiterPoint 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 22403-0 | HealthAssure