Not having all your body parts for tchiyas Hameisim is one thing. What you give away when alive is still different from what is a part of a person when they die. Anything with too much blood on it ends up buried. I know that certain IV lines are not removed after death if the contain a certain amount of blood or will cause bleeding. The first time I lost a sister they wanted to take a biopsy after she died and we were told no. I think (I was young so I could be wrong) they got permission for a minimal amount of blood though because there was a need to determine if she had a certain infection, meaning the families health was a concern.
