Frequent STD testing is a must for anyone engaging in intimate activities. As many as 80% of people carrying an STI may not show symptoms. Extended incubation periods for some conditions also means you may not be able to detect an infection for up to 6 months from the time of exposure. This screening kit targets the most prevalent infections in the U.S. today, and addresses 71% of the infections occurring in the U.S., excluding HPV.