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InsightHorizon Digest

When should I retest FeLV positive kitten

Author

Andrew Mccoy

Updated on April 10, 2026

Because the test detects antibodies to the disease, a kitten may test as positive for the disease due to circulating maternal antibodies. These antibodies have generally dissipated by 5 to 6 months of age, so if a kitten tests positive, it is recommended that the kitten should be retested after 6 months old.

When should you retest a kitten for FeLV?

Kittens that test positive for FIV antibodies should be retested every 60 days up to 6 months of age and if the kitten becomes seronegative, it most likely is not infected. If results of tests performed after six months of age are still confirmed positive, these kittens should be considered infected.

Do kittens need leukemia booster?

Kittens receive their first FeLV vaccine at around eight weeks of age followed by a booster three to four weeks later. Kittens older than 16 weeks and adult cats that are receiving their first dose should also have a booster within three to four weeks. Adult cats with sustained exposure should have an annual booster.

What if my kitten tested positive for feline leukemia?

Cats who test positive for FeLV can live for many years without serious symptoms. A positive FeLV test result SHOULD NOT be a death sentence. A vaccination for FeLV exists, but it is not 100 percent effective. In rare instances, FeLV can spread through the shared use of litter boxes and/or feeding dishes.

Can a cat have a false positive feline leukemia test?

A false-positive result means that a healthy, uninfected cat has tested positive. A positive test result could lead to that cat being euthanized unnecessarily. A false-negative result means that an infected cat has been missed and is considered free of the infection.

How common is a false positive feline leukemia test?

If you test 1000 cats you will see that 17 out of the 47 cats that test positive do not actually have FeLV. That means that over 36% of positive results are actually false positives. In areas with a prevalence lower than 3% the number of false positives increases.

How long does it take to get FeLV test results?

The ELISA test generally takes 10 to 20 minutes to perform. The IFA is sent to a veterinary diagnostic laboratory and takes 1 to 2 days to obtain results.

Can a kitten survive feline leukemia?

Most cats with FeLV live normal lives, but their life span tends to be significantly shorter. Around 80 percent of FeLV kittens do not live past three years and most die within a year.

Should FeLV positive cats be vaccinated?

For the vast majority of cats, a blood test is highly recommended prior to vaccinating to determine whether a cat has been infected the FeLV virus. If the cat tests positive for FeLV, there is no benefit in administering the vaccine, as it will not offer any protection against the virus.

Can feline leukemia go away?

Unfortunately, there is no cure for feline leukemia. Your veterinarian will work with you to treat symptoms as they occur. FeLV-positive cats are vulnerable to other infections and illnesses, so they need to be kept up to date on all preventive care.

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How long is FeLV vaccine good for?

FELINE 2-FELV PROVIDES PROTECTION AGAINST FELINE LEUKEMIA The only feline leukemia virus vaccine shown to be effective against persistent viremia for 2 years after vaccination.

How many FeLV shots does a kitten need?

Feline Leukemia Virus (FeLV) vaccination is given to ALL kittens as a 2 shot series, beginning at 9 weeks of age or older. This is boosted for ALL cats 1 year later then only the cats at risk (that go outdoors) continue with annual vaccinations. Rabies vaccinations are started at 12 weeks of age or older.

Do indoor cats need feline leukemia shot?

For cats, we currently recommend all cats be vaccinated for Rhinotracheitis, Calicivirus, and Panleukopenia. Feline Leukemia vaccine is considered a “core” vaccine for kittens and outdoor cats only and a “non-core” vaccine for all indoor adult cats.

Does FeLV vaccine interfere with FeLV test?

Saliva and tear tests should not be used for routine screening of individual cats. It should also be noted that neither maternal antibody nor recent FeLV vaccination interferes with the ELISA-based FeLV test.

How contagious is FeLV?

A cat with FeLV sheds a large quantity of the virus in its saliva, as well as in other bodily fluids such as nasal secretions, urine and feces. However, FeLV is not a highly contagious virus, and transmission generally requires a prolonged period of close contact between infected and susceptible cats.

Can a cat test false positive for FIV?

The blood test is quite accurate, but false positives and occasionally false negatives do occur. In healthy, low-risk populations FIV is quite uncommon, and this leads to an increase in the relative number of false positive results. The blood test may also falsely identify recently infected cats as negative.

Which is worse FIV or FeLV?

FIV has highly variable clinical signs that are similar to FeLV and include fever, anemia, weight loss, and diarrhea along with a high risk for secondary infections. FIV tends to be clinically less aggressive than FeLV. “FIV is classically seen as a disease of male aggression from cats biting each other,” Dr.

What should kittens be tested for?

Blood tests: The American Association of Feline Practitioners recommends testing for FeLV and FIV on all newly-adopted cats, regardless of age, and whether or not there are other cats in their new home.

Can kittens be tested for feline leukemia?

There is no age requirement for this test; it can be done at any time. The test does require a few drops of blood, and it is not easy to get blood from a 4- or 5-week-old kitten. (Maybe this is why he said you have to wait a few weeks). A positive test means the kitten is likely infected with FeLV.

Can a FeLV-positive cat live with other cats?

For socialized, owned cats, it is generally recommended that FeLV-positive cats only live in homes with other FeLV-positive cats. (FIV-positive cats can live with other cats who don’t have FIV as long as they get along and don’t fight, causing bite wounds.)

How long does FeLV stay on surfaces?

Keeping the environment clean can help prevent the spread of FPV and FeLV. Although FPV can be killed in the environment by cleaning with a dilute bleach solution, the virus can live on surfaces for up to 2 years and is resistant to many other cleaning products and disinfectants.

How did my indoor cat get leukemia?

How Can My Cat Get Feline Leukemia? FeLV is transmitted from other infected cats “shedding” the virus — a time when the virus is replicating in the body and released into the environment through their saliva, nasal secretions, urine, feces, and milk.

How do you disinfect after feline leukemia?

It’s a good idea to replace food and water dishes, bedding, litter pans and toys used by an FeLV-positive cat — or clean and disinfect them using 4 ounces of household bleach diluted in a gallon of water — before getting a new cat.

Is FeLV painful?

A variety of symptoms could develop, and there is a progressive deterioration in their health over time. However, ​a FeLV cat can live for many years without illness. FeLV can cause diseases such as enteritis (chronic diarrhea), eye disease or stomatitis (painful inflammation of the mouth).

At what age do you vaccinate kittens?

Immunizations are started at 6-8 weeks of age and are repeated every 3-4 weeks until the kitten is 4 months old. The routine or core vaccinations will protect your kitten from the most common diseases: feline distemper (panleukopenia), feline viral rhinotracheitis (feline herpes virus 1), calicivirus, and rabies.

How many Fvrcp do kittens need?

Kittens receive four FVRCP injections, starting at the age of six to eight weeks. A booster shot is typically given annually, or every three years depending on the cat’s age. FVR = Feline Viral Rhinotracheitis.

Is FeLV vaccine subcutaneous?

According to recommendations of the vaccine-associated sarcoma task force, parenteral FeLV vaccines are administered subcutaneously as distally as possible in the left rear limb.

How often should Fvrcp be given?

Their recommendations state that, following an appropriate initial vaccination protocol, the FVRCP (distemper/respiratory virus) vaccine need only be given every 3 years at most.

Can unvaccinated kittens be around vaccinated cats?

Is it safe for my unvaccinated kitten to be around my other pets? The simple answer is no. Even if your other pets are vaccinated. This is because vaccinated animals can often be carriers of diseases without showing any symptoms, which they may then transmit to an unvaccinated pet.

How much does a feline leukemia shot cost?

The average cost of cat vaccinations are about $20 for a rabies vaccine, $35 for a 3 in 1 vaccine, $34 for the Feline Leukemia Vaccine, and $37 for the PureVax® Rabies according to VippetCare.

Is it illegal to not vaccinate your cat?

As it relates to our feline companions, there are no state-required cat vaccinations in California. However, that does not mean cat owners should skip vaccinating their pets against life-threatening diseases. The state and veterinarians recommend a cat receive, at a minimum, the rabies vaccine.