How does IUI work?
There are several techniques to prepare sperm for IUI. All involve separating sperm from seminal fluid. It is not possible to inject semen directly into the uterus because of chemicals in the fluid that can cause painful uterine contractions. At UCSF Medical Center, we use a sperm separation method called “density gradient separation.” In this technique, live sperm are separated from dead sperm and other cells through the use of viscous solution. We will ask that the male partner bring or produce his specimen for our laboratory several hours prior to the IUI procedure between 8:30 and 11 a.m. About two hours are required to process the sperm. After preparation, the sperm concentrate is placed through the cervix into the uterus by using a thin, flexible catheter, which takes five to 10 minutes. The patient may experience mild cramping during the procedure but this symptom should resolve shortly after the procedure is completed. After the procedure, the patient can resume usual activitie
