Experts please fill me in

What if I was going to get a drug test done. Say I went with
my friend whose urine I substituted with and we went to the same testing facility. Say she went in to get tested. Then two people later, I get called in to give my sample (actually my friend's who just went in). Assume everything passed temperature-wise.
Mind you we are the same sex and there are lots of people coming in and out
at this particular testing facility. Say Quest or Labcorp.
Will there be any suspicion at the actual toxicology lab where they sent and
test the urine for drugs? Will they see that the two of our samples match
identically in pH, creatinine, and specific gravity? Will the lab tech testing the
samples recognize the matching properties of both of our samples since they
will be handed in to the lab around the same time? Will they be suspicious of the exact same levels of specific urine properties? Do they do a simple urinalysis? Or do they just look at the 5 or 10 drugs that are tested for? You get me?
Tell me if I am just paranoid....
Thanks

If thats the only way to pass, what do you got to lose?

I would think so but, I dont think that they would be comparing more than 2 results to see if there the same. They would only be checking to see if u passed