How to increase organ donation: does opting out have a role?

Every country needs to increase the number of deceased organ donors and the potential impact of a change to opting-out legislation remains unproven, despite the apparent association between opting out and higher donor rates. However, the Spanish model--so successful in Spain and many other countries--is not based on a requirement for opting out, and, in the UK, deceased organ donation has increased by 25% in 3 years through implementation of a series of recommendations that have transformed the infrastructure of donation. A major review of opting out concluded that it is not appropriate for the UK at this time.