LOINCActiveBoth

LOINC Code 40736-1: La Crosse virus Ab HAI Ql (S)

40736-1 is a LOINC code used to identify La Crosse virus Ab HAI 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 La Crosse virus 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 La Crosse virus 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: HAI

What it does not mean

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

Key facts

  • La Crosse virus Ab [Presence] in Serum by Hemagglutination inhibition
  • La Crosse virus Ab
  • California encephalitis virus has more than 20 strains, most of which include "strain" in the name. In some cases such as La Crosse virus, however, the name does not signal that it is a strain of California encephalitis.
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; California Encephalitis Virus; Hemagglutination inhibition; HI; ID; Infectious Disease; InfectiousDisease; Lacrosse virus; LACV; 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

La Crosse virus Ab HAI Ql (S)La Crosse virus Ab [Presence] in Serum by Hemagglutination inhibitionLACV Ab Ser Ql HAILa Crosse virus AbMICROLa Crosse virus antibody, BloodPrThr

Frequently asked questions

Code details

Code40736-1
SystemLOINC
Display nameLa Crosse virus Ab HAI Ql (S)
DescriptionLa Crosse virus Ab
Short nameLACV Ab Ser Ql HAI
ComponentLa Crosse virus Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodHAI
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.58

Consumer names

La Crosse virus antibody, Blood

Part names

LA Crosse virus AbPrThrPtSerOrdHAIPresence or ThresholdPoint in time (spot)SerumHemagglutination inhibition

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 40736-1 | HealthAssure