Typically, once an individual has become sexually active, periodic testing for HIV and other sexually transmitted diseases (STDs) is highly recommended.  Especially those with multiple partners.  As the number of sexual partners increases, so does the risk for contracting an STD. As the likelihood of contracting an STD increases, the need for testing for all STDs is extremely important.<br><br>Sexually active adults should keep in mind that a partner may unknowingly transmit an STD to them due to the lack of noticeable symptoms. Lack of symptoms, however, does not eliminate or even reduce transmission of an STD from one person to another and it certainly does not mean someone is STD free.  Chlamydia, gonorrhea, genital herpes, and especially HIV are a few of the STDs that can be transmitted when no symptoms are present.<br><br><br><br> <a href="http://www.advancedtestingcenter.com/stdtesting.html">more info</a>