An MMR Titer is a blood test that checks your antibody titer levels to Measles, Mumps and Rubella. It is run in a laboratory. A titer test is not an injection, shot, or vaccination. An antibody is a component of the immune system.
If you're an adult, get a Td (tetanus and diphtheria) booster shot every 10 years to stay protected. Since some people may lose the protective antibody levels after 5 years, a booster vaccination is recommended if you get a deep, contaminated wound and haven't had a vaccination in more than 5 years.
This is the first booster shot for tetanus and one dose is given to all preteens at age 11 or 12. All teens and adults who never got the Tdap shot need one dose in place of a Td (tetanus and diphtheria) shot. Tdap helps protect against whooping cough (pertussis).