previously known as preimplantation genetic diagnosis (PGD), can be used with IVF to test for rare genetic conditions, such as Sickle Cell Anaemia. Patients then have the choice of only placing healthy embryos into the womb.

Because the embryos need to be tested in a lab, you will need to have IVF, even if you and your partner have no fertility problems.

Embryos which have been tested and are free of the condition will be placed back into your womb to hopefully continue to develop. The embryo can either be transferred two to six days after being created (ie, a fresh embryo transfer)or frozen and transferred at a later date.