Vet Lise Hansen joins Anna Webb to discuss why every dog must have a Titre Test. It tests for the serological immunity to the core diseases, proving immunity in lieu of an annual booster shot. She explains that vaccines do not come in small medium and large so a dog like Mr Binks weighing 5 kilos takes the same amount as a Great Dane! Why do something you don't need to do? The World Small Animal veterinary Association recommends Titre Tests over boosters now that lifetime Duration of Immunity has been proved.