Feline Leukemia Virus (FeLV)
Feline leukemia virus antigen testing supports identification of FeLV infection, including asymptomatic carriers.
Fact Table
| Species | Feline |
|---|---|
| Biomarker | Feline leukemia virus antigen |
| Method | Fluorescence immunoassay (FICT) |
| Unit | Tu/ml |
| Category | Infectious Disease |
Clinical Context
Feline leukemia virus antigen testing supports identification of FeLV infection, including asymptomatic carriers.
Interpretation should always combine the quantitative result with the patient's signalment, history, clinical signs, and any other laboratory findings. A single value is rarely diagnostic on its own; serial measurements often provide more useful information.
Reference Range
Reference ranges vary by species, age and laboratory method — always interpret against the kit IFU and your in-house validation.
Related Test Kits
Related Articles
- FeLV and FIV in Cats: What a Positive Really Means FeLV and FIV are two retroviruses with two different tests. Here's why a kitten FIV positive is often false and what the results actually mean.
- Cat Infectious Disease Testing: What One Panel Can Catch A guide to feline infectious disease testing: FPV, FHV-1, FCV, FCoV, FeLV and FIV — when to test and how to interpret results.
Manufacturer documentation + clinical literature cited in related articles
2026-09-12
MEDIUM — reference ranges are method-specific
FAQ
What does the Feline Leukemia Virus (FeLV) test measure?
Migibio's Feline Leukemia Virus (FeLV) test is a quantitative fluorescence immunoassay (FICT) run on the FIA680/FIA880 analyzer. It is intended as an aid in clinical assessment: Feline leukemia virus antigen testing supports identification of FeLV infection, including asymptomatic carriers. The exact specimen, sample handling, and reporting units are specified in the kit IFU.
When is FeLV testing most useful?
When a compatible clinical syndrome is present, during outbreak screening in kennels, catteries or shelters, or to assess vaccine-induced antibody titers after vaccination. Antigen and antibody tests answer different questions; interpret the result with vaccination history and clinical signs. For cats, use the result with the clinical history, physical examination, and any other laboratory findings.
Why does this Data Hub not publish a universal reference range?
Reference ranges vary by species, age and laboratory method — always interpret against the kit IFU and your in-house validation.