JAVMA News Digest

To titer or to revaccinate?

When and why has it become more common for veterinarians to measure antibody titers when deciding whether to revaccinate cats and dogs?

An antibody titer is a measure of the concentration of antibodies in the blood, as determined by a test involving repeatedly diluting a blood sample and exposing those dilutions to an antigen. The shorthand is to refer to all measurements of antibody concentration as titers.

Dr. Richard Ford, emeritus professor of internal medicine at the North Carolina State University College of Veterinary Medicine, said factors inside and outside the profession are driving the