Feline Leukemia Virus (FeLV) is one of the most serious infectious diseases affecting cats worldwide. This virus weakens the cat’s immune system and can lead to severe health problems including anemia, cancer, and increased susceptibility to other infections. Early detection is essential to manage the disease effectively and protect other cats in your home or community.

This guide explains what FeLV is, how it spreads, common symptoms, and how you can use a simple at-home test kit to detect it quickly and accurately.

What is Feline Leukemia Virus (FeLV)?

FeLV is a retrovirus that infects cats, causing immune suppression and increasing the risk of chronic illness. The virus primarily spreads through close contact, such as grooming, sharing food bowls, and from mother cats to kittens. It can also be transmitted via bite wounds.

FeLV infection can lead to serious complications like lymphoma and anemia, and infected cats often have shorter lifespans if the disease progresses untreated.

How Does FeLV Spread?

  • Direct contact with infected saliva, nasal secretions, or blood

  • Sharing food or water bowls with an infected cat

  • Mother-to-kitten transmission during pregnancy or nursing

  • Bite wounds during fights

Cats that live in multi-cat households, outdoor cats, or cats that come into contact with unknown or stray cats are at higher risk of contracting FeLV.

Recognizing FeLV Symptoms

Many cats infected with FeLV do not show obvious symptoms early on. However, common signs of infection include:

  • Persistent fever

  • Weight loss

  • Loss of appetite

  • Pale gums or anemia

  • Lethargy and weakness

  • Enlarged lymph nodes

  • Respiratory infections or other chronic illnesses

Because these symptoms can be subtle or similar to other diseases, early testing is crucial.

About the ISENVO Feline FeLV Leukemia Virus Ag Rapid Test Kit

The ISENVO 10Pcs Feline FeLV Ag Rapid Test Kit is a complete home testing solution designed to detect FeLV infection quickly and accurately.

Key Features:

  • Type: Chromatographic immunoassay for qualitative detection

  • Sample: Serum, plasma, or whole blood

  • Test time: 5–10 minutes

  • Kit includes: All necessary components to perform the test at home

  • Shelf life: At least 12 months from purchase

  • No extra equipment required

This test kit allows cat owners to screen their cats conveniently without visiting a veterinary clinic, offering peace of mind and timely health management.

How to Use the FeLV Test Kit at Home

  1. Collect a small blood sample from your cat (serum, plasma, or whole blood).

  2. Follow the included instructions to apply the sample to the test cassette.

  3. Wait 5–10 minutes for the test to develop.

  4. Interpret the results based on visible lines on the test window:

    • A control line confirms the test is valid.

    • A test line indicates the presence of FeLV antigen, meaning a positive result.

What to Do if Your Cat Tests Positive

A positive FeLV test indicates that your cat has been infected with the virus. Immediate steps include:

  • Contact your veterinarian for confirmatory testing and guidance.

  • Limit contact between infected cats and healthy cats to prevent spreading.

  • Provide supportive care to manage symptoms and prevent secondary infections.

  • Schedule regular veterinary check-ups to monitor your cat’s health.

Early diagnosis and management can improve quality of life and extend the lifespan of FeLV-positive cats.

Prevention Tips

  • Test new cats before introducing them into your home.

  • Keep cats indoors or supervise outdoor time to reduce contact with infected cats.

  • Spay or neuter cats to reduce aggressive behaviors and fighting.

  • Maintain good hygiene with food bowls, bedding, and litter boxes.

  • Use at-home screening tools like the ISENVO FeLV test kit regularly, especially in multi-cat households.

Final Thoughts

Feline Leukemia Virus is a serious but manageable disease when detected early. The ISENVO 10Pcs Feline FeLV Leukemia Virus Ag Rapid Test Kit provides a fast, reliable, and easy way for cat owners to screen their pets in the comfort of their own home.

Regular testing, early detection, and proper care can help protect your cat’s health and prevent the spread of FeLV within your household. If you suspect your cat may be at risk, using this rapid test kit is a smart step toward proactive pet health management.