Around since 1978, In Vitro Fertilization (IVF) literally means 'in glass' fertilization. Some medication is given to the female, as a first step, to allow her to produce more than just one egg. Eggs are collected just as they are ready to be ovulated and mixed with specially prepared sperm in the laboratory. Any resultant embryos are then allowed to develop before being placed into the uterus. Surplus, good quality embryos can be frozen or 'cryopreserved' for use at a later date.
IVF is suitable for couples that have exhibited blocked fallopian tubes, an ovulation problem, sub-optimal semen quality or in a situation where no clear diagnosis has been made.