Storage of cells and tissue

Postpone motherhood?

If you can feel the clock ticking but you want to postpone motherhood, AGE banking may be a solution. This is also known as social freezing

During your ART treatment or before you start treatment, it may be necessary to freeze and store reproductive cells or tissue. UZ Brussel's tissue bank where we store reproductive human tissue is called the CRG's MLM bank.

To freeze any tissues, a contract must be signed at all times. In this contract:
  • you give your consent to freeze and store tissue;
  • you determine the storage period;
  • you decide what needs to be done with the stored material on termination of the storage period or when you don't need it anymore; and
  • (if applicable) you undertake to pay a storage cost for the period of storage.
These decisions can be revoked at all times, as long as you do this in writing before the end of the storage period.

Transport of embryos, sperm and/or eggs

Strictly regulated

You cannot store frozen cells and tissue yourself at home.

If during your treatment you had reproductive tissue frozen, it may be necessary for medical reasons to transport it to another centre, or the other way around, from another centre to the CRG.
This transport is only possible with a professional company:
  • due to complex regulations at several levels (EU-directive, international transport agreements, laboratory requirements, etc.) ,
  • and to ensure that transport is done in optimal conditions.


The transport of your genetic material from the CRG to another Belgian centre will take a number of weeks. When all the administrative formalities for the transport have been completed, it can - depending on the availability of transport containers and for reasons of internal planning - take up to maximum four weeks before the transport (in Belgium) takes place.
In other words, only plan your treatment after you received confirmation that the eggs, sperm or embryos have effectively arrived in the centre of destination.

How is the transport organised?

  • Through the CRG contact centre you contact your doctor.
  • The doctor reviews the relevance of your request and discusses it with you.
  • In case of a positive decision you are contacted by the contact centre:
    • to go over the practical aspects of the transport, and
    • in case of transport coming from another centre, offer you a contract in which you give your consent to freeze your supernumerary gametes or embryos.
  • You are responsible for the transport costs. They comprise:
    • the cost of the transport itself.
      This is settled directly with the transport company, and
    • the administrative cost for CRG's intervention.
      UZ Brussel will charge this to you.