I gave blood for the first time some 18 months ago, I did it on impulse one day on the way home from work so stupidly I'd not eaten. Felt fine after and returned home where I started to feel faint and was sick so asked a relative (a JW) to phone me in ill for my pub job. Their response was 'serves you right for giving blood'. Wonder if it would be the same now THEY can receive it under drastic circumstances.
Also I was wondering . . . they're not supposed to assosciate with those not in the 'truth', but they'd have our blood?? Would that make them 'part sinner'