Antibody testing may help guide booster decisions for senior pets

As dogs and cats age, veterinarians can use antibody titer testing to check whether core vaccine protection may still be present and avoid unnecessary boosters. Biogal says its in-clinic VacciCheck test can fit into routine senior wellness visits and deliver results in about 23 minutes.

Why it matters: - Senior dogs and cats do not always need automatic booster shots for core viral diseases. - Antibody titer testing can help veterinarians make more individualized vaccination decisions during routine senior wellness care. - The approach may reduce unnecessary revaccination while still supporting protection against serious infectious disease.

What happened: - Biogal says antibody testing can help assess existing immunity in older dogs and cats. - The company says successful vaccination can produce immunity that lasts for years against core viral diseases. - Biogal highlights VacciCheck, an in-clinic antibody titer test for dogs and cats. - VacciCheck is designed to be used during routine veterinary appointments.

The details: - In dogs, studies have shown long-lasting immunity against canine parvovirus, canine distemper virus, and canine adenovirus. - In cats, studies have shown long-lasting immunity against feline panleukopenia virus. - Aging changes the immune system, but senior age does not automatically mean prior vaccine protection is gone. - Many older pets still have detectable antibodies years after their last vaccination. - Antibody titer testing measures antibodies against specific infectious diseases. - For core viral diseases, the presence of antibodies is strongly associated with protection. - The 2024 World Small Animal Veterinary Association vaccination guidelines recognize antibody testing as a useful tool for guiding core revaccination decisions in adult dogs and cats. - A positive titer test suggests existing humoral immunity and may show that another booster is not needed right away. - A negative test does not necessarily mean a pet has no immune protection, because titer testing does not measure every part of the immune response. - Veterinarians should interpret results alongside the animal’s health, vaccination history, and exposure risk. - Senior pets often already receive bloodwork to monitor kidney and liver function, metabolic health, and other age-related issues. - Antibody testing can be added to that same visit when suitable. - Veterinarians may use part of the blood already collected, rather than scheduling a separate appointment. - The canine VacciCheck test measures antibodies against canine parvovirus, canine distemper virus, and canine adenovirus. - The feline VacciCheck test measures antibodies against feline panleukopenia virus. - Biogal says VacciCheck uses a small blood sample and returns results in about 23 minutes. - Biogal says that makes the test practical for in-clinic use without sending samples to an outside lab.

Between the lines: - The article frames senior vaccination as a risk-based decision, not a fixed schedule. - That approach could help veterinarians move from booster timing alone to a broader review of immunity, health status, and lifestyle. - Antibody testing is presented as one tool, not a replacement for all vaccines. - Rabies requirements and recommendations for other core and non-core vaccines still need separate consideration.

What's next: - Veterinarians may increasingly fold antibody titer testing into senior wellness exams as routine bloodwork remains standard. - Pet owners may have more evidence-based conversations about whether a booster is needed now or later. - Biogal is directing readers to learn more about VacciCheck.