What are titers for immunizations?
A titer test is a measure of the antibodies in the blood, providing a check of disease immunity. The results of a titer test then allow a clinician to determine whether a vaccination is required. A titer test involves a simple blood draw.
How long is a titer test good for?
A three-year interval is appropriate for the majority of adult dogs when quantitative tests are used. The manufacturers of a in-clinic (yes/no) screening tests recommend they be used annually. A titer test within the first 6 months of life and again at one is appropriate for puppies.
Breeder: So the way I understand this is if a vet refuses to acknowledge that me as a breeder gave the puppy the vaccine(s), rather than try to over vaccinate, there is the option to titer. And as an adult, rather than vaccinate every year, you can choose to titer every year to every 3 years and avoid vaccinating every year.