Character mistake: John would have no reason to ask the CT technician if she had any results. He says "that was a long one," indicating he's had this done before and should know it typically takes around 24-48 hours to get results. (Likely just a line of dialogue added for the benefit of the audience, who may not know.)
Character mistake: The end credits (which are also IMDb's source) have the protagonist as "Detective Lucas Boyd." However, in the movie, his name (see the nametag on his desk) is spelled "Lukas" with a K. (01:01:05)