What is IVF and How Does It Work? IVF or In Vitro Fertilization is one of the most successful assisted reproduction technologies (ARTs) during which mature eggs from a woman’s ovaries are removed and fertilized with a male partner’s sperm, outside the body, in a laboratory. Since fertilization takes place in a glass culture dish in the lab, the process is called “in vitro,” which is Latin for “in glass.”
The fertilized egg is implanted in to the woman’s uterus, where the embryo then develops under natural conditions. Since not every fertilized egg or embryo develops into a pregnancy, doctors usually fertilize multiple eggs, which are then frozen for later use, if required.