When the paramedic is inserting an IV into Mike on the ambulance trip, he is using his right hand to apply the patch to. When the next shot zooms in on his face, the paramedic is applying the patch to his left hand.
When Weiss & Danziger are talking in the car (0:12), the large dog in the backseat disappears when the camera cuts to an outside-the-car shot.
When Red is giving Weiss a ride just after 1:19:00, Red first uses the term "glass syringe." After this he keeps saying "plastic needles" instead of "plastic syringes." All needles of this era were made of sharpened stainless steel.
At 33 minutes in the girl in the red SUV has the radio on and it's playing a song from Locksley called "The Whip" which was released in 2010. The movie takes place in 1998.
The movie takes place in 1998, but when Weiss is talking to different people in the materials department, one of them has a black Dell LCD monitor which wasn't available until the mid-2000s.
When they leave the nurse's house after the first interview, there is a blue Chevy pick-up at the intersection that is at least a 2010 model.
During the questioning of Jeffrey Dancort by Nathaniel Price (31:00 minutes into the movie), Dancourt says his home is in Houston Texas, but he gives the zip code of 74561 which is Quinton, Oklahoma.