LOINCBoth

LOINC Code 26659-3: L. autumnalis Ab Ql (S)

26659-3 is a LOINC code used to identify L. autumnalis Ab Ql (S) 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 autumnalis 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 autumnalis 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: DEPRECATED
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Deprecated Leptospira autumnalis Ab [Presence] in Serum
  • Leptospira autumnalis Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; Infectious Disease; InfectiousDisease; L automnalis; L autumnalis; Leptospirosis; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR

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. autumnalis Ab Ql (S)Deprecated Leptospira autumnalis Ab [Presence] in SerumDeprecated L autumnalis Ab Ser QlLeptospira autumnalis AbMICROLeptospira autumnalis antibody, BloodPrThr

Frequently asked questions

Code details

Code26659-3
SystemLOINC
Display nameL. autumnalis Ab Ql (S)
DescriptionLeptospira autumnalis Ab
Short nameDeprecated L autumnalis Ab Ser Ql
ComponentLeptospira autumnalis Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusDEPRECATED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.58

Consumer names

Leptospira autumnalis antibody, Blood

Part names

Leptospira autumnalis AbPrThrPtSerOrdPresence or ThresholdPoint 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 26659-3 | HealthAssure