I feel so badly for both Osiris and her mommy. These are definitely tough times for Osiris's family. At least Osiris is no longer hurting and in a better place. I would definitely think they should be able to do a blood test for Feline Leukemia, I mean if they can test the living, then there is no reason they can't test those who have recently passed. It is so hard when these things occur so suddenly. It shocks everyone and is very difficult.