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Freezing fertilised eggs to shorten the in vitro fertilisation (IVF) with or without intracytoplasmic sperm injection (ICSI)

If as part of the IVF or IVF/ICSI treatment, more eggs are fertilised as embryos than should be transferred during the embryo transfer, these "surplus" fertilised eggs can be cryopreserved in the so-called pronucleus stage.

If necessary, these pre-nuclei can be thawed at a later date and after they have developed into embryos, they are transferred into the uterine cavity. This allows for a pregnancy without having to repeat all the treatment steps of an IVF or IVF/ICSI procedure.

The method is proven and safe and increases pregnancy rate as related to the egg retrieval.

Freezing of sperm or testicular tissue - a solution for expected infertility

The freezing of sperm may be useful if, due to a man's disease, testicular surgery or chemotherapy or radiotherapy is planned which will cause reduced fertility - but where there is still a desire to have children.

In individual cases the freezing of sperm may be desired with a longer absence of the man. The frozen sperm can then be used for ICSI or an insemination therapy depending on the initial situation. The recovered testicular tissue or sperm retrieved during a TESE can be cryopreserved and used for subsequent fertility therapy.

Freezing of mature eggs

The freezing of mature unfertilised eggs is possible as a fertility protective measure prior to chemotherapy or in the event of a desire for future fertility (social freezing). For the freezing of eggs, all the IVF treatment steps must be done up to the egg retrieval.

Freezing of ovarian tissue

  • As a fertility protective measure prior to chemotherapy