I was never assigned to the Laboratory Division but considering I did tours in Bomb and Arson and Homicide, I've seen these quite a bit.
This is a Crime Scene Command Van circa late 70's early 80's. These were usually left parked empty, then loaded with mission specific gear depending on the nature of the scene.
The real deal way back when.
Lots of scratchbuilding. Ladder rack, the ladder, interior storage cabinets and radio antenna. I used pieces from other kits and cast the radio, siren box and spotlights from resin. Decals are a combo of custom made (door shield) and computer generated at home.