I kind of enjoyed how ridiculous this movie was, but as a regular blood donor, I had some major beef with the blood draw scene. Judging by the giant goblet they wind up with, they got something like a pint of blood from Selene. That would take between five to ten minutes with one needle the size of a ballpoint pen tip! You don't need a machine for that, and a larger needle would be less efficient, since it would likely tear the sides of the blood vessels open, causing the blood to seep into the surrounding tissue and be lost. Also, blood is generally purified by the liver and kidneys. How the hell are they expecting the toxin to be removed from her blood it once it's out of her body? They're not running it through filters or anything; they just seem to be waiting it out!