Continuity mistake: Turks cereal bowl goes from empty to full a couple of times while talking to J.D. and Danni. (00:04:35 - 00:05:20)
Continuity mistake: At 18:42 in the show, it shows Turk and Carla talking about re-inviting the female head of surgery to their wedding. During this shot, in which Turk and Carla are closest to the camera, Turks ID badge is facing the wrong way. When the camera angle changes at 18:46 to showing Turk and Carla from the other side (as if from the female head of surgery's POV) Turks ID badge is now showing the right way. It stays like this for the rest of the scene. (00:18:40)
Answer: No, it was a fake, they used a stamp.
It is real.