Titer Tests: Your Pet’s Immunization Identifier! Vaccine antibody titer testing has been endorsed by the World Small Animal Veterinary Association (WSAVA) since 2013 to help pet parents and veterinarians determine if pets are immunized and no longer need annual “booster shots.” If you’re being pressured to re-vaccinate your pet and are concerned about over-vaccination, listen to this episode of The Mutt Master Podcast to learn more about titer testing. Let me know if you’ve had titer testing for