Continuity mistake: Bones walks onto the lab platform - first, there's no beep from the card reader, and second, she comes up on the wrong side of the steps, where there is no card reader anyway. The mistake is that the production team seems to have completely forgotten about the requirement for card access to that platform. They've had card access required since Season 1; anytime someone doesn't swipe their card, alarms go off.
Continuity mistake: Bones tests some liquid to determine if blood is present. She uses about 2" in the test tube. The result shows a pink hue, not red. The camera angle changes, and now there's only about 1" in the tube, and it is red, not pink.