What is the procedure called where sperm and oocytes are mixed outside the woman's body and then placed into the fallopian tube?

The procedure where sperm and oocytes are mixed outside the woman's body before being placed into the fallopian tube is known as Gamete Intrafallopian Transfer (GIFT). During GIFT, both the sperm and the oocytes are collected and combined in a laboratory setting, but instead of fertilization occurring in vitro (outside the body), this method relies on transferring the gametes directly into the fallopian tube. This allows for natural fertilization to take place within the body.

This approach can be beneficial for couples who wish to achieve fertilization in a more natural environment and is often chosen when there are specific fertility issues that warrant such a method. The procedure requires that the woman has at least one functioning fallopian tube, as this is where the sperm and oocyte meet for fertilization.