STI testing is not required by Legacy. However, STI screening prior to freezing sperm is required by many fertility clinics where you may want to transfer or use your sample in the future. To ensure your sample can be used at any fertility center or medical practice in the future, we strongly advise STI screening in the 6 months before freezing a sample. Our at-home STI test kit is included with For Tomorrow and Forever packages. If you're purchasing a semen analysis kit with cryogenic storage, we recommend ordering an at-home STI kit as well.