I don't understand how the WT links blood transfusion and eating blood? http://www.watchtower.org/e/hb/article_01.htm from their website, it is obvious that they can gain the conclusion from the bible that EATING blood is wrong.
But from Leviticus 17:1-16 10 “‘As for any man of the house of Israel or some alien resident who is residing as an alien in YOUR midst who eats any sort of blood, I shall certainly set my face against the soul that is eating the blood, and I shall indeed cut him off from among his people. 11 For the soul of the flesh is in the blood, and I myself have put it upon the altar for YOU to make atonement for YOUR souls, because it is the blood that makes atonement by the soul [in it]. 12 That is why I have said to the sons of Israel: “No soul of YOU must eat blood and no alien resident who is residing as an alien in YOUR midst should eat blood.”
I don't see how they can turn around and say that blood should not be used for its propper use which is to flow through your veins and sustain your life. It even says: "For the life of the flesh is in the blood." So surely its ok to use blood for its propper and natural use. Its not natural to eat it, but it is natural to have it running through your veins?