Bloodwork & Fecal Testing

Yearly Bloodwork

At Premier Vet Care Animal Clinic, we recommend preventive bloodwork once every 6 to 12 months starting at age 1 for both dogs and cats. 

Question: If my pet is healthy, why does he need annual blood work?

Answer: Blood and urine tests are extremely useful tools for looking at the overall health of your pet. From them, a vet can learn if your pet is a diabetic, has kidney or liver disease, or an infection. Many of these problems may not be obvious on a simple physical exam, but if caught early can be successfully treated or controlled, giving your pet a longer and better quality of life.

It’s also important to have lab tests performed when a pet is healthy, so the veterinarian has a baseline to compare results when/if your pet does become ill. It’s important to note that lab tests must be coupled with a complete physical examination and patient history from the owner to be of the most use.

Sometimes we can come to a definitive diagnosis with routine blood work, but oftentimes we find changes in blood work that lead us to do more diagnostic testing to come to a definitive diagnosis. When we don’t get an absolute answer from blood work, it helps guide us as to what the next diagnostic steps should be (X-rays, ultrasound, or more specific blood testing).

Question: What kinds of things can a complete blood count (CBC) tell a vet about the health of my pet? What should a vet be looking for?

Answer: Usually a CBC and either a full or partial chemistry panel is done, sometimes with pancreatic enzymes and a T4 (thyroid level).

A CBC evaluates the number of red blood cells, white blood cells, and platelets, along with the concentration of red blood cells (hematocrit or PCV) and hemoglobin levels.
Abnormal changes on a CBC could include anemia (low red blood-cell count), leukocytosis (high white blood-cell count), or thrombocytopenia (low platelets). Anemia has a wide range of causes, and finding a low red blood-cell count, depending on the severity, usually warrants searching for a cause.

There are five different types of white blood cells, and elevated or low counts in each can mean different things.

For example, neutrophils are the most common elevated white blood cells because they are one of the first responders to any type of inflammation, including infection. Eosinophils, another type of white blood cells, are typically elevated with parasitic or allergic diseases.

Platelets are very important in normal clotting. A significant decrease in platelets can lead to life-threatening, spontaneous bleeding. There are many causes of decreased platelets, including infectious diseases and immune-mediated diseases, such as Lyme's disease (a tick-borne bacterial infection) and immune-mediated thrombocytopenia.

Much more information can be gained from a CBC. The ones mentioned are only a few examples of some of the more common changes that we find.

A chemistry panel usually includes testing of liver enzymes, kidney values, glucose, electrolytes, and protein levels.

Elevations in liver enzymes can be caused by a number of different issues and may warrant either monitoring or further testing, depending on which enzymes are elevated and how much. Inflammatory disease of the liver, endocrine diseases such as Cushing’s, toxin ingestion and cancer are just a few things that could cause elevations in liver values.

The two most common reasons for elevations in both kidney values (BUN and creatinine) are dehydration and damage to the kidneys. The most common cause of damage to the kidneys in older pets – cats in particular – is chronic renal failure. This is where a urine sample becomes very important in combination with the bloodwork.

The concentration of the urine, or urine specific gravity, helps us to differentiate between dehydration and kidney failure. A dehydrated animal will have very concentrated urine, while an animal in kidney failure will have dilute urine.

Probably the most common change we see in glucose is elevation from diabetes, though there are a few other diseases where we find a low blood glucose (which can be life-threatening).

Changes in electrolytes can occur with many diseases, including kidney disease, some endocrine diseases and most notably in gastrointestinal (GI) disease, in which the patient is vomiting or having diarrhea. In sick patients, checking electrolytes helps us to know what kind of fluids to use and if we need to supplement electrolytes (e.g., potassium).

Protein values can be elevated or decreased and provide supplemental information about several body systems. The two that we look at are albumin and globulin. Elevated albumin can be found with dehydration; elevated globulins are found with inflammation or infection. Low albumin levels may indicate a liver issue (as albumin is produced by the liver) or that the albumin is being lost through the kidneys or GI tract, indicating a problem with one of these organ systems.

Question: Do you have any examples to share of symptomless dogs or cats whose blood work revealed health problems?

Answer: Yes, there are so many times that we have done routine blood work (in apparent non-sick patients) and have caught problems earlier than we otherwise would have- which ended up saving the pet's life. Specific examples include:

1.) A 5-year-old dog that came in for a spay. Preoperative blood work showed a significant elevation in lymphocytes (a type of white blood cell) and leukemia was diagnosed. We were able to extend the dog's life much longer by starting treatment immediately.

2.) A 6-month-old small-breed dog that came in for a spay. Preoperative blood work showed elevation in liver values. Further diagnostic tests were done, and the dog was diagnosed with a congenital disease call hepatic microvascular dysplasia. A congenital disease is an abnormality that a pet is born with but may not show clinical signs for at first. 

Also, we frequently diagnose early renal failure and hyperthyroidism in cats on routine yearly blood work. This ends up being life-saving in these cats so that they can live a normal long life.

Question: What blood work should be done routinely on what appears to be a healthy dog or cat? How often?

Answer: It is a great idea to get a “minimum database” (CBC, chemistry panel, urinalysis) done when your pet is healthy. This way, your veterinarian has normal values for your pet to compare with when your pet does get sick or gets older.

Any time your pet is sick, before any anesthetic procedures or if your pet is in his senior years, your veterinarian may recommend lab work. Any time your pet starts a new, long-term medication, particularly nonsteroidal anti-inflammatories (e.g. Rimadyl), bloodwork should be checked before and after starting the medication, as most medications are processed through the liver and kidneys.

For human year, dogs and cats age 7 years. A lot can happen in 3.5 or 7 years. For this reason, we recommend annual or biannual bloodwork.

Question: What about geriatric pets? How often should they be tested?

Answer: For senior animals, lab work should ideally be done twice yearly, possibly more frequently based on lab results. What is considered “senior” depends on the species (dog/cat) and breed (large dog/small dog)- larger dogs age much faster than smaller dogs. If your pet is older than 6, it would be a good idea to check with your veterinarian about doing senior lab work.

Question: What can a urine sample tell a vet?

Answer: Urinalysis in addition to the CBC and chemistry panel completes what we term a “minimum database.” Urine specific gravity paired with our chemistry panel tells us a lot about kidney function.

Things we check for on a urinalysis include protein (can indicate glomerular kidney dysfunction), glucose (present with diabetes), ketones (present with uncontrolled diabetes known as diabetic ketoacidosis), blood (can indicate infection or inflammation), white blood cells (infection, inflammation), and bacteria (infection).

Dilute urine can be an indication of other diseases as well, including liver disease and endocrine disease. In a dog, dilute urine can also be normal depending on time of day and water consumption. Dilute urine in a cat is almost always significant.

Question: What can a fecal sample tell a vet?

Answer: Fecal samples will tell you if your pet has a GI parasite. The parasites could be intestinal worms (e.g. roundworms), small pathogens like coccidia or giardia, or a bacterial overgrowth. Most importantly, these parasites can be spread to humans. Routine fecal testing is a good way to protect yourself and your family- especially children. 

We recommend fecal testing once a year. 

If you have any questions, please do not hesitate to ask us.


Fecal Testing

At Premier Vet Care Animal Clinic, we recommend fecal testing once a year for both dogs and cats. 

Have you ever wondered why veterinarians recommend yearly fecal testing and what exactly is tested for? It's not because we enjoy pet poop, haha! We recommend "fecals" because they are an important part of your pet's annual vet exam. Fecals allow veterinarians to check your pet for intestinal parasites. Intestinal parasites are a major cause of sickness in pets and also a concern for people. According to Kansas Sate, 34% of dogs in the United States have some kind of intestinal parasite, and the Center for Disease Control (CDC) says that 14% of people in the U.S. have been infected with the roundworm Toxocara. As a result of Toxoocara infecions, approximately 700 people lose their vision every year. Fecals are an important tool to ensure that your pet and  your household are not infected and exposed to intestinal parasites. 

What do fecals detect?

Fecals enable veterinarians to determine if you pet has intestinal parasites such as roundworms, hookworms, whipworms, coccidia, and giardia. Since intestinal parasties live in your pet's gastrointestinal tract, they are usually hidden from view. Unlike external parasites like fleas and ticks, most intestinal parasties are never seen. The only way to detect the presence of intstinal parasites and identify them is by doing a fecal.

How do you perform a fecal?

Since worm eggs, larvae, and protozoan cysts are difficult or impossible to see with the naked eye, a fecal exam is done with a microscope. There are three different ways to prepare a stool sample for examination:

-Smear- A smear is the easiest to do and involves smearing a small sample of stool across a microscope glass slide and examining it under the microscope. 

-Floatation- A flotation (also known as a float) is the most common method used in veterinary hospitals and involves mixing the stool sample in a special solution that allows the eggs and protozoan cysts to float the surface. 

-Centrifugation- Centrifugation involes using a centrifuge to spin down a stool sample suspended in a special solution prior to performing the floatation. The parasites are then identified microscopically based on the size, shape, and characteristcs of their eggs- larvae or cysts that are found in the stool specimen. This is the most effective way at detecting intestinal parasites. This is the only way we do it at Premier Vet Care Animal Clinic

How should you provide a proper fecal sample?

When it comes to food, we all know that fresh is best. Not surprisingly, the same is true for stool samples. The fact is that fresher stool samples give you more accurate and sensitive results. Eggs and larvae from some types of parasites, as well as protozoa and protozoan cysts, can become altered and unrecongizable the longer they sit out. For the best results, collect the freshest stool sample and bring it to us the same day. If this is not possible, you can seal the fecal sample in a ziplock bag and refrigerate it until you can bring it to us. If you're putting it in your refrigerator, we recommend being extra careful to not dirty the outside of the ziplock bag and double bagging it to ensure you do not contaminate your fridge and food. But remember, fresher is better!

How often does your pet need a fecal? 

According to the Companion Animal Parasite Council, all pets should be, "tested for parasites at least yearly". More frequent fecals may be needed for puppies, animals with gastrointestinal disturbances, and some other pets depending on their exposure-risk and lifestyle. Speak with Dr. Josh to find out how frequently you shoudl bring in your pet's stool sample. Ultimately, the goal is to identfy and treat parasitic infections that may be compromising your pet's health and even putting your famiy at risk. 

Along with monthly year-round parasite prevetatives (ProHeart Injections work for 6 months, wow!), routine fecal exams are the best way to ensure that your pet and your family are safe from intestinal parasites. 

Call 972-463-8387 to Request an Appointment Today!

972-463-8387 

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