I used to have to testify for drug testing when I worked in the healthcare field.
I always found it odd how chummy the prosecutor, defense, officers, detectives and judge were with each other, like they were all in this scam together.
Really I didn't find it odd at all, years of dealing with cops and DUI, I saw them break the law over and over when we collected(sent specimens off to state lab without chain of custody) and testing specimens. If you called them out you were asking for some serious trouble so you did as I was told. I did raise the question one time and my lab director went ape shit, turned bright red and became furious and that was the end of that.
So yes the system is rigged, we're marinated in corruption and not just LE, the private sector is in on the act as well.