In vitro fertilization (IVF) is a complex series of procedures used to help with fertility or prevent genetic problems and assist with the conception of a child. It is a common infertility treatment. During the procedure, a fertility doctor takes the eggs from the ovaries using a small needle and fertilizes them with sperm in a specialized lab. After fertilization happens, the eggs develop into embryos. Three to five days later, the specialist re-implants the embryos back into the uterus. Sometimes these steps are split into different parts and the process can take longer

IVF is the most effective form of assisted reproductive technology. The procedure can be done using one’s own eggs and the partner's sperm. Or IVF may involve eggs, sperm or embryos from a known or anonymous donor. In some cases, a gestational carrier — a woman who has an embryo implanted in her uterus — might be used

The chances of having a healthy baby using IVF depend on many factors, such as the age and the cause of infertility. In addition, IVF can be time-consuming, expensive and invasive. If more than one embryo is transferred to the uterus, IVF can result in a pregnancy with more than one fetus (multiple pregnancy). Fetal reduction is done if more than two fetus are implanted. Termination of the worst fetus is done sparing the good one