In vitro fertilization (IVF) is an assisted reproductive technology used for the couple who are unable to conceive or having difficulty in carrying a healthy pregnancy. During IVF procedure an egg and sperm is brought together in the laboratory conditions for fertilization process. For in vitro fertilization (IVF) either a donor egg or a donor sperm can also be used for fertilization. After the fertilization process the fertilized egg is generally placed in the uterus for further development.