In Vitro Fertilization (IVF) is a process of fertilization where sperm and an egg are combined outside the body or " in vitro" (in glass). This process initially monitors and stimulates a woman's ovulation process, extracting egg(s) from the woman's ovaries and allowing sperm to fertilize the egg(s). Once the fertilized egg (zygote) undergoes embryo culture for 2-6 days, it is manually implanted in a uterus with hopes of a successful pregnancy. The IVF technology is used for infertility treatment and gestational surrogacy. A fertilized egg may be implanted into a surrogate's uterus resulting in a child that is not genetically related to the surrogate. . IVF is generally used as a final option once less invasive options have failed or deemed unlikely to work.