http://medical.miragesearch.com/treatment/infertility/iui-intrauterine-insemination Fertility Preservation or Third Party Reproduction Fertility preservation. Men may collect and freeze (cryopreserve) their sperm for future use before having a vasectomy, testicular surgery, or radiation/chemotherapy treatment for cancer. The sperm can then be used later for IUI. Third party reproduction. IUI is performed when couples use sperm from a man who is not the woman’s partner to have a baby. This is called donor insemination (DI). Donor Insemination is commonly performed when the male partner’s sperm quality is so severely damaged that his sperm shouldn’t be used for conception and in vitro fertilization is not an option. Donor Insemination can also be used if the man has certain genetic diseases that he does not want to pass on to his children. Single women or lesbian couples who want to have a baby may also consider Donor Insemination. Read More: blog.miragesearch.com/category/infertility