It is your decision on organ donation that applies, according to the law.
If the deceased expressed a positive stand to organ donation, either orally or in writing, a donation can be carried out. The next-of-kin cannot overrule this.
If the next-of-kin doesn’t know of the deceased feelings to organ donation but they do not oppose it, a donation can be carried out. In the possibility that the deceased was opposed to donation, then donation is not carried out, even though the next-of-kin may support it.
Throughout Europe, even in countries with a register, the next-of-kin will be consulted about donation, even in instances where the deceased had expressed a wish to donate. Therefore it is of great importance that you inform those closest to you about your stand on organ donation!