Blood tests

Most of the usual blood tests are done in the office with immediate results allowing a quick and relevant treatment.

For more advanced blood tests, Dr. Franck LEFAY collaborates with a speciliazed veterinary laboratory in Paris.


We try to answer below your most frequently asked questions about blood tests.

In which cases are blood tests necessary?

Blood tests can be very useful for the veterinarian as they contribute to:
– Direct him and help him to determine the cause of the pathology.
– Confirm or dismiss a suspicion.
– To quantify the degree, the extent of a pathology.


It is essential that you share this information as some diets induce an over-representation of some blood elements, an anomaly that can lead the veterinarian to a misdiagnosis. Remember to report any particular diet before your pet’s blood tests.

What does a preoperative checkup include?

Dr. Lefay conducts a thorough clinical examination of your animal before any surgery to ensure that he is fit to be anesthetized and operated on. However, some abnormalities can not be demonstrated by a standard clinical examination. Blood tests are then necessary to check that your little companion is capable of properly eliminating anesthetic products, that it does not present disorders of coagulation, anemia or asymptomatic disease.

How to prepare your pet for a blood test?

It is usually best to bring your pet fasting the night before and without medication. His last meal will be taken the day before 21h and the water will be left at will in all cases. Depending on the blood tests to be performed for your pet, the protocols may differ. If in doubt, you can always call the office and we will tell you the most suitable protocol for your pet.

How can I regularly check the thyroid function of my pet?
You can bring your pet to the office by appointment. We will do several blood tests. Some will be processed and analyzed in the office. Others will be sent to a specialized veterinary laboratory which will give us an answer in a few days.

For any other question about your pet blood tests, do not hesitate to contact us or visit to Dr. Lefay’s office.