IUI is also called artificial insemination. It is a process by which sperm is placed into the reproductive tract of a female for the purpose of impregnating the female by using means other than sexual intercourse. Insemination is the simplest but still efficient method of assisted reproductive techniques.

Insemination may be recommended for treatment of infertility due to: moderate reduction of the sperm quality, cervical factor infertility, anovulation, immune infertility, and “unexplained” (idiopathic) infertility. The prerequisite for insemination is a preserved functioning of uterine tubes.

It is recommended to undergo not more than 3-4 insemination attempts. For, 87% of patients, who conceive from insemination procedure, become pregnant within 3-4 insemination cycles. After 3-4 unsuccessful insemination attempts an IVF treatment should follow.