Many doctor's offices, most health departments and some clinics offer testing for sexually transmitted diseases, or STDs. It is important for a person who suspects he has an STD to get tested as soon as possible. The CDC estimates that 19 million new cases of STDs are diagnosed annually.
Roughly half of the new cases of STDs diagnosed each year occur in people between the ages of 15 and 24. Anyone who is sexually active is at risk for STDs. It is important to be tested because it is possible to have an STD without ever experiencing symptoms. Failing to be treated for STDs sometimes leads to serious health complications.