Continuity: When J.D., Turk, Carla and Elliot are talking with each other in the cafeteria, J.D. is drinking a cup of juice. When he is paged, the juice is gone and replaced with a carton of milk.
Factual errors: The hematopathologist writes his report with a pencil. Not only would he likely have dictated this sort of report and then have it transcribed and printed, but pencils are *never* used to document in medical records, since information could be erased and changed later.