One moment, please https://1cctv.uk/stmap_57vtm15.html sumatriptan 100 mg cost Sexually transmitted diseases or infections can't live outside the body for a long period of timeâespecially not on a cold, hard surface like a toilet seat. Plus, they aren't present in urine, anyway (it's usually sterile), so the chances of you catching one from whoever used the bathroom before you are slim to none, says Dr. Yen.