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.
If you never had tetanus shots as a child, or if you're not sure if you had them, you'll need to get 3 tetanus shots in about a 1-year time span. After that, 1 booster shot every 10 years will work for you. Get a tetanus shot as soon as possible if you have a dirty cut or wound and 5 or more years have passed since your last tetanus shot. Some people may need tetanus immunoglobulin (TIG) for a wound that is at high risk for tetanus.