STI tests are usually a pee in a cup test plus a blood test, where a person collects some of your blood through a small needle in your arm. Sometimes the health care provider will ask to look at the genitals – this doesn’t hurt. STI testing is sometimes done by swabbing the affected area (e.g. penis, vagina, throat, anus, sore). The swab can be uncomfortable but doesn’t usually hurt very much. You can talk to the health care provider about what to expect.