you can draw blood on the patient but without giving them a list of rights etc....you just explain
"mr. person i am going to take some blood to run some tests ok?"
and they stick out their arm and tadah!
you need them to sign a consent for HIV testing after they get "counselled" by the doc ( in my hospital)
and you can release info to places like DCFS, funeral homes, Organ procurement etc. as long as it is tracked and reported