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Feline Leukemia Virus Diagnosis


Feline Leukemia · Feline Leukemia signs & symptoms · Feline Leukemia diagnosis · Feline Leukemia treatment · Feline Leukemia related articles
 

Diagnosis of Feline Leukemia (FeLV)

Diagnosing FeLV is more difficult than one would think given that there are many tests to help with the diagnosis:
  • tear tests
  • saliva tests
  • blood tests
  • bone marrow tests, and
  • X-rays.

Diagnosing is difficult because occasionally tests are difficult to interpret or the results are different when cats are retested in a few months.

The saliva test is simple to do, but is less accurate than blood tests. Tests of blood, saliva or tears can look for specific FeLV proteins. Finding the FeLV proteins does not mean the cat will become ill with FeLV. Some of these cats clear the virus from their bodies completely and never become ill. Because cats can clear an infection, any cat with a positive test is retested in 3 months to determine whether the cat is infected or has cleared the virus.

It’s also possible to diagnose Feline Leukemia with a blood test that measures the total number of white blood cells. The number of WBCs in a healthy cat ranges from 5,500 – 20,000 WBC per mm3 blood. When a cat has FeLV, the number of WBCs can increase or can plummet. While these results suggest FeLV, there are other conditions that cause WBCs to increase (infection) or plummet (kidney disease).

There are special, rather complicated bone marrow tests that help diagnose FeLV, but these are not routinely done. Occasionally, X-rays help diagnose FeLV because they show tumors that rarely develop except with leukemia, such as tumors in the thymus gland in the chest.

Diagnosis of FeLV is further complicated because many cats with FeLV are simultaneously infected with multiple diseases. For example, many cats with FeLV also have feline immunodeficiency virus (FIV). When multiple diseases affect blood and bone marrow, it is more difficult to determine what is causing the pet’s illness. Often the diagnosis of FeLV requires waiting and retesting, which is emotionally draining for the family.

Read more information about Feline Leukemia.

 

The articles here were answered by a variety of pharmacists and veterinarians
 
Date Category Topic
06/30/11  Other  Losing Weight, Won't Eat
04/15/11  Other  Cost
03/07/11  Allergy  Distemper Or Allergy
08/25/10  Digestive Care  Excessive Smelly Gas
08/21/09  Pain/Inflammation  Inflammed Testicles And Odor
03/14/09  Seizure Disorder  Seizure During Sleep
09/18/08  Other  Stomach Pains
03/01/08  Other  Feline Leukemia
12/31/07  Vaccines  Injections
10/29/07  Dental Care  Tongue Ulcer
07/20/07  Vaccines  Re: Cat With Feline Leukemia
01/20/07  Vaccines  Feline Leukemia
12/31/06  Other  Not Sure
09/18/06  Other  Felv
08/28/06  Pain/Inflammation  Unusual Behavior In A Kitten
1 2 »»
 
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  Feline Leukemia signs & symptoms
 
  • Fever
  • Weight loss
  • Swollen lymph nodes
  • Anemia
  • Upper respiratory infections
  • Persistent diarrhea
  • Sore gums & mouth
  • Recurring skin & ear infections
  • Nervous system problems
  • Low numbers of white blood cells
  • Low numbers of clotting cells
  • Immune-mediated hemolytic anemia
  •  
     
     
  • Kittens less than 4 months old are susceptible to FeLV, but healthy older cats are resistant to infection

  • Of all cats that die of cancer, about 1/3 will die of FeLV-caused tumors

  • After a cat is infected with FeLV, 3 things can happen: the cat can clear the virus, can develop a latent infection, or can develop an overwhelming persistent infection
  •  
     
     
  • Kittens less than 4 months old
  • Mature cats with extraordinarily weak immune systems
  •  
     
    Feline Leukemia medications
     Medications for FeLV:
     
  • Doxycycline
  • Prednisone
  • Oxytetracycline
  • Liquamycin
  • Interferon
  • IV ImmunoRegulin (propionibacterium acnes)
  • Acemannan
  • immunomodulator staphylococcal protein
  • Cyclophosphamide
  • Vincristine
  •  
     Supplements for FeLV:
     
  • Be Well
  • Missing Link
  • Nordic Naturals Omega-3 Pet
  • C.E.T. Toothpaste
  • 1-800-PetMeds VitaChews
  •  
     
     
     
     
    This information is for educational purposes only and is intended to be a supplement to, and not a substitute for, the expertise and professional judgment of your veterinarian. The information is NOT to be used for diagnosis or treatment of your pet. You should always consult your own veterinarian for specific advice concerning the treatment of your pet.

    The information about medications is not intended to cover all possible uses, directions, precautions, warnings, allergic reactions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for your pet. It is not a substitute for a veterinary exam, and it does not replace the need for services provided by your veterinarian.

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