Beth's (Tatiana Maslany) apartment and the police department both had to be rebuilt for this episode, because they had been disassembled after Season 2.
The digital backgrounds on the monitor during Beth's (Tatiana Maslany) online conversation with her clone are very similar to those used in the 1980s TV show Max Headroom (1987), the eponymous star of which was played by Matt Frewer who appears in OB as Dr. Aldous Leekie.
In the flashbacks the Clone Club use the pink phones that Alison (Tatiana Maslany) provided in season 1.
Urinalysis drug testing is much more strictly monitored than just peeing in a cup and handing it to someone. In addition to chain of custody, one monitors the temperature of the sample to ensure that it's body temp to prevent using a fake sample, which is what Beth (Tatiana Maslany) did.
In season 1, the show took place in Ontario based upon license plates. In seasons 2 and 3 the license plates were generic with no locality referenced. In this episode, you can see Beth's (Tatiana Maslany) car with an Ontario license plate.