LOINCActiveBoth

LOINC Code 23736-2: Feline leukemia virus Ag IF Ql (Tiss)

23736-2 is a LOINC code used to identify Feline leukemia virus Ag IF Ql (Tiss) 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 Feline leukemia virus Ag. It is commonly used with the system or sample type Tiss.

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 Feline leukemia virus Ag. It is commonly used with the system or sample type Tiss.

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: IF

What it does not mean

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

Key facts

  • Feline leukemia virus Ag [Presence] in Tissue by Immunofluorescence
  • Feline leukemia virus Ag
  • ACIF; Anticomplement Immunofluorescence; Antigen; Antigens; DFA; FA; FELV; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Time Resolved Fluorescence; Tissue; Tissue, unspecified; TRF; 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

Feline leukemia virus Ag IF Ql (Tiss)Feline leukemia virus Ag [Presence] in Tissue by ImmunofluorescenceFeLV Ag Tiss Ql IFFeline leukemia virus AgMICROFeline Leukemia virus antigen, TissuePrThr

Frequently asked questions

Code details

Code23736-2
SystemLOINC
Display nameFeline leukemia virus Ag IF Ql (Tiss)
DescriptionFeline leukemia virus Ag
Short nameFeLV Ag Tiss Ql IF
ComponentFeline leukemia virus Ag
PropertyPrThr
TimingPt
System (specimen)Tiss
ScaleOrd
MethodIF
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.56

Consumer names

Feline Leukemia virus antigen, Tissue

Part names

Feline leukemia virus AgPrThrPtTissOrdIFPresence or ThresholdPoint in time (spot)Tissue and SmearsImmunofluorescence (IF)

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.