Why can't they get DNA the old fashioned way, extract it from a suspect while in custody, with or without his permission.
Oh spare me the violins!
If a suspect wasn’t guilty, what would he be doing in custody?! 8-)
Obviously you did not get my jest. DNA information is now available from a Red Cross database? How inappropriate. The only way they should be able to do a DNA test is when they have they guy in custody. Why should volunteering blood and having it extracted at a bloodbank make everyone a suspect?