WOW... CuriousInCa... Thank you - for stating good science!
But then there are the human individuals who must adhere to that... Often in an environment of whichful thinking - for getting a "positive" result - or one of cost pressure versus any decency or concern for the result they report... And then there are the other aspects of the total protocol required - a thing that I suspect YOU actually can comprehend better than the average reader...
And then there is your sage advice to the poster - to GET A BACK UP TEST... I had myself many times given that same advice - including to myself. And in spite of that - it was still quite easy to destroy my life with a junk screen phase, inside of the NY courts system.
So... Thank you - for at least stating some truth here. But in all reality - most individuals in those circumstances... They're going to be as screwed as I was - even WITH my own test. And I did mine by BLOOD - to be sure it would be above suspicion for claims of "cheating", as are often seen in urinalysis and even oral fluid testing - as was the method used to falsely prosecute and sentence me.