Similarly under the Law Code, an Israelite could not simply bring a blood sample from his best bull/goat/sheep to the Temple for splashing on the altar. The animal had to be killed first (after the Israelite laid his hand on the animal's head in symbol of the animal representing him). Only then did the blood represent that life and had atoning value at the altar.
On the other hand, if an Israelite found an animal already dead (naturally or from a predator), eating its unbled flesh only incurred ceremonial uncleanness (as opposed to the death penalty if he himself had killed it).
With that understanding, blood transfusions or blood therapy of some sort should, theoretically, incur no blood guilt or wrath by God since no human life was taken. And thus, the blood involved did not symbolize any life. (Like a wedding ring, it only represents a particular marriage when it has been given to someone. A wedding ring in a jewelry store does not represent anyone's marriage.)
This is GOLD! I'm afraid this thread will be lost in the shuffle, this is groundbreaking stuff!