Pre-implantation genetic diagnosis (PGD) is available to couples that are at risk of having a child with a specific genetic or chromosome disorder, such as cystic fibrosis, sickle cell disease or Huntington's disease.
The aim is to obtain and fertilise a number of eggs. The fertilised embryos develop for three days and then one or two cells are removed from each embryo. The genetic material (DNA and chromosomes) from the cells are tested for the known disorder in the family. Up to two unaffected embryos are then transferred into the uterus. If the pregnancy is successful, the baby should not be affected by the disorder it was tested for.
The centre for pre-implantation genetic diagnosis works closely with the genetics department and is the largest and most successful centre in the UK for PGD, with over 600 babies born as a result of this treatment.
Visit the PGD website for: