Cryopreservation of impregnated egg cells and embryos

Purpose of the procedure

Cryopreservation allows a couple's excess impregnated egg cells and embryos to be frozen during in vitro fertilisation (IVF) treatments. The egg cells previously collected under general anaesthesia with ultrasound control in the operating theatre are isolated from the follicular fluid and then fertilised in the laboratory using traditional IVF techniques or ICSI (intracytoplasmic injection of a spermatozoid). The impregnated egg cells and embryos are then frozen and stored in liquid nitrogen at -196°C.


A contract is concluded for a period of one year and is tacitly renewed year by year. The maximum legal period of storage is five years, renewable once for another period of five years (total maximum duration: 10 years) in accordance with the Reproductive Medicine Act (RMA).

Medical follow-up is provided by specialist doctors in the RMU.

 Last updated on 17/07/2018 at 10:29