PSNI Assistant Chief Constable George Hamilton said:
The police service respects the right of any family to take this action.
In terms of interaction with families affected by the human tissue review, police have ensured that highly trained family liaison officers have met personally with families.
It has always been the priority of police to put families and their needs first in what is a very distressing time.
Police chiefs have been forced to apologise to grieving families after it emerged body parts from suspicious deaths were kept needlessly.
Police have admitted preserving body parts in suspicious death cases for years after the cases were solved.