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.
The recommended dose of the tetanus booster is a 0.5 mL injection every 10 years. Immunosuppressive drugs like corticosteroids, antimetabolites, alkylating agents, cytotoxic drugs and radiation may interact with the tetanus booster. Tell your doctor all medications you use. Exercise caution if you get the tetanus booster and have had Guillain-Barre syndrome, have thrombocytopenia, or are prone to blood clots. If you are pregnant and have not received the tetanus booster it is recommended to receive the vaccine after the second trimester.