Where did they get the vial of blood to put in his casket?

Factual Questions
1

They didn’t find his body, so where did they get a vial of blood? Does someone keep Firefighters or other emergency care workers blood “on file” so to speak?

2

Sorry, here is thelink.

3

He had donated it to a plasma center before he died. They obviously never ended up using it.

Zev Steinhardt

4

Thanks Zev.