Generally, STD testing is quite simple and fast. They do not hurt unless you are sensitive to needles, however, most STD tests do not require blood tests. It will depend on what you are being tested for and if you have any symptoms of an STD. This is something that the nurse or doctor at the testing center or doctor’s office can help you learn more about. They will help you understand what will be required during your testing and which tests are necessary and why.