The kit you buy will come with a prepaid return envelope for the samples. You will also have a sample bad and instructions on how to get the samples depending on the type of test you want. Their labs test for all the major STDs, including herpes, HIV, chlamydia, syphilis, and gonorrhea. These are lab-certified tests you can complete in less than five minutes. Try sending your samples back as soon as possible if you want fast results. They have kits that can screen many conditions, but they are pricier than the rest. A packaged deal is the best choice when you don't know the infection you have contracted.