PRE-ANAESTHETIC BLOOD TESTS

What are pre-anaesthetic blood tests?

Prior to every anaesthetic a Veterinarian will perform a physical examination on your pet, paying particular attention to the heart and lungs. Unfortunately there are certain conditions, including disorders of the kidneys and blood, that cannot be detected without blood testing. Pre-anaesthetic blood testing allows us to check for problems and if necessary modify our anaesthetic regime, or if more serious, delay surgery until your pet’s problem can be treated.

What is being tested?

There are three components of the animal's blood that is examined. These are:

• Haematology-  These tests look at the

• Red blood cells (RBC)these cells are responsible for carrying oxygen through the body
• White Blood Cells (WBC)these cells are responsible for fighting off infections
• Platelets (PLT)hese cell fragments are involved in the process of blood clottinga deficiency of platelets increases the risk of bleeding with surgery

• Biochemistry - These tests measure the levels of certain chemicals and enzymes in the blood.
• Urea and Creatinineboth these chemicals are normally excreted by the kidneys
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• ALT and ALKPboth these enzymes are produced by the liver
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• Glucosehigh blood sugar levels can indicate diabetes or stress (particularly in cats)
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• Total proteinthe level of protein in the blood can indicate a variety of conditions ranging from dehydration to liver and kidney

• Electrolytes
• The potassium, sodium and chloride levels in the blood are chemicals called electrolytes. They are important for many reasons including keeping the heart beating regularly and the muscles working properly. Changes in their levels can greatly influence the outcome of the surgery.