I'm not sure the information is all that useful, might be fun to play with though. Then there's the issue of drawing blood and pricking yourself. I'm assuming that's still how it work, isn't it? I remember when I was in school and we had to intentionally prick ourselves to get blood to test our blood types. I think I stared at that lancet for most of the class before I finally was able to poke myself hard enough to draw blood.