Yes indeed.
But JWs will respond that Jesus' words were purely symbolic, which of course they are, so his command to eat his blood is irrelevant to the blood transfusion debate.
But then they forget that blood is purely a symbol for the life or soul that is lost. Does a blood transfusion involve loss of life or soul? No, none whatsoever. So a blood transfusion has no symbolic value in God's eyes whatsoever. It's no different to any other organ transplant.