. . . but apparently I am a rock.  Four needle sticks, 1 small bruise and 1 large hematoma later and no one was able to get more than a drop of blood out of me.  Mind you, two of those sticks and a bruise were after drinking 2 liters of water.  I go to Los Angeles tomorrow, but I’ve got to stop at the lab and hope they can get some blood before I can leave.

UPDATE
Three more sticks, two more bruises, and they finally filled two vials of blood.

photo courtesy of Darwin Bell