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Understanding Blood Tests for Cats

Understanding Blood Tests for Cats

When it comes to diagnosing medical conditions and monitoring the health of your feline friend, bloodwork can be a valuable tool. Our Hoquiam vets talk about blood tests for cats and what they can teach us about your feline friend.

Cat Blood Tests

When your veterinarian recommends blood tests for cats, it can cause some concern among pet parents. Not knowing why your cat needs a medical procedure done and what the results mean can be very scary for even the most experienced pet owners.

 Below are some of the common blood tests done on cats and what they tell the veterinarian.

Complete Blood Count (CBC)

A CBC measures and examines a cat's blood cells. It gives the veterinarian a wealth of information. Some of these include:

  • Red blood cell (RBC) counts, proportions, and health - RBCs carry oxygen, iron, and other nutrients around the body.
  • White blood cell (WBC) counts, proportions, and health - WBCs help fight inflammation, infection, cancer cells, and parasitic intruders.
  • Platelet counts and health - Platelets control blood clotting.

A CBC can tell a veterinarian if a cat is anemic, dehydrated, fighting off inflammation or an infection, and whether your cat has internal bleeding.

BUN & Creatinine

Blood urea nitrogen (BUN) and creatinine are blood chemistries that are routinely measured as part of larger blood panels. If the BUN is high, it can indicate dehydration, kidney dysfunction, or a liver problem.

Creatinine levels are more strictly related to kidney function. High levels indicate that the cat's kidneys are having difficulty clearing the creatinine from the body and kidney disease may be developing.

Alanine Aminotransferase (ALT) & Bilirubin

ALT and bilirubin are blood chemistries that are also often present in routine blood panels. They are mostly indicative of liver health, and if they are too high, it usually indicates a dysfunction of the liver.

Glucose

Glucose, or blood sugar, is mostly tested to determine whether a cat has diabetes mellitus, during which the glucose result will be quite high. Low blood sugar can also give a veterinarian valuable information about a cat's overall health.

    Feline Leukemia Virus (FELV) / Feline Immunodeficiency Virus (FIV)

    FELV and FIV are routinely tested for in kittens and periodically throughout adulthood. These viruses are life-threatening, and can't be cured once your cat gets infected, so it's important to keep tabs on a cat's status with regard to them.

      Thyroxine (T4)

      T4 is usually monitored in cats as they get older. A high T4 might indicate the development of hyperthyroidism, a commonly diagnosed condition in cats. High thyroid levels can cause a myriad of different signs in cats, including increased appetite, weight loss, eating non-food items or wanting more human food, and increased vomiting.

      Electrolytes

      Electrolytes levels, including potassium, sodium, and chloride, can tell a veterinarian a lot about a cat's health status, including information about hydration levels and organ function, especially the kidneys. Electrolyte imbalances can result in many signs of illness in cats, including heart arrhythmias and muscle weakness.

      Why Your Cat May Need Blood Tests

      The list of reasons why your cat may be in need of bloodwork is infinite. But here are some of the most commonly noted reasons:

      It's your cat's first exam - We recommend blood work at the time of your cat's first exam because it helps us establish baseline health, check for any congenital abnormalities or potential concerns, and help us form an individual wellness plan for your cat.

      During semi-annual and annual wellness exams - Cat blood tests are usually recommended for all life stages from kittens to geriatric cats as part of their routine wellness checkups. These are extremely beneficial in our mature patients, as we often see cat's health and happiness return to normal when blood tests catch illness early. Cat bloodwork, along with other bodily fluids like urine, can help identify conditions the examination portion of a physical cannot.

      If a cat seems sick - Cat blood tests are suitable for cats that are not displaying any overt signs of illness, disease or injury, but are acting abnormally.

      Before surgery - Cat blood work is used to determine the general health of the liver, kidneys, and other organs, which helps a veterinarian select the safest form of anesthesia. Bloodwork can also help determine the surgical risk level in all cats, especially elderly or injured patients.

      Cat Blood Test Results: Explained

      Blood tests for cats can not only help to diagnose issues related to your cat's blood, but they can also show the function of their organs. Your vet will use a blood sample from your cat to evaluate the levels related to a number of components within your cat's blood. Some examples are:

      • Cat blood tests can indicate a deficiency in albumin levels, which indicates a possible liver issue because albumin is produced in the liver, or intestinal or kidney issues as albumin can be lost if these are diseased.
      • Blood tests for cats can detect abnormal hormonal-chemical responses to environmental and internal stimuli, which indicates a potential issue with the patient's endocrine system.

      Once the results are in and we've determined the target area and potential condition we can focus on performing further diagnostics as well as begin a treatment plan. In this way, feline blood tests serve as very valuable tools in a veterinarian's toolkit for helping to detect, identify, diagnose, treat and ultimately prevent illness or disease.

      Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.

      If you would like more information about the blood tests that your cat needs, please contact our Hoquiam vets to schedule a consultation.

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