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In homologous intrauterine insemination, the seminal liquid of the partner, previously treated in the laboratory to obtain an adequately concentrated selection of spermatozoa, is deposited directly inside the uterine cavity (IUI) via a catheter, at the moment of ovulation. The fertile day is identified by LH and Estradiol level in the blood and ecographic monitoring of the ovulation.
In selected cases, the insemination can be combined to ovary stimulation to obtain a multiple follicle growth.
In heterologous intrauterine insemination, the same procedure is carried out with donor’s seminal liquid as indicated.
The GIFT procedure (Gamete Intra Fallopian Transfer) is a particular technique in which the spermatozoa and eggs are placed in a tube, where the in vivo process of fertilisation normally takes place.
The preparation of the patient is similar to the fertilisation technique illustrated in the in vitro fertilisation technique, but the operation is carried out in the operating room by laparoscopy and under general anaesthetic at the Day Hospital. Also in this case, the partner’s or donor’s seminal liquid is used on the basis of what has been indicated.