As far as the WTS is concerned, the matter of blood is ONLY religious, never medical.Unfortunately for the WTS, throughout both the Hebrew and Greek Scriptures, "blood" ALWAYS means DEATH, usually a violent one.
It never means life.Go to my site at http://au.geocities.com/doug_mason1940/blood.html and download the material written by Stibbs and by Leon Morris.
When blood was presented in the temple service, it showed that the animal was dead.
When Noah was told to ensure there was no blood in the meat, this was to ensure the animal was dead. This was written to counter the cruel practice of stripping flesh from a living animal and eating the flesh while it was still quivering with life and the blood was dripping from it. The writers cast the story into Noah's time, thereby they were writing against their heathen neighbors, probably in an attempt to immunise the Jews from the heathen practices.
In the transfusion of blood, whether whole blood or some parts of it, the presence of the blood does not indicate the death of the donor. Rather, it is a gift given out of love and concern.
Doug