GC/MS Question

Hey all.. my employer forgot to send me for a drug test when I was hired a few months back (thankfully -- I was only a couple days clean because I'd scored the job without an interview). Well, apparently they got wise to it 2 weeks ago because they asked me to go for one "whenever I got a chance." I tested clean for THC on a home test a week ago, but not for opiates because I'm on (prescribed) cough medicine with codeine.

My question is this: when I come up positive for codeine, and my opiate results are confirmed by GC/MS, will Quest confirm ALL my results, even the negatives, by GC/MS at that point? I guess I'm just nervous that when they're confirming opiates, I'll be somewhere under the standard 50 ng/dl but OVER the confirmatory 15 ng/dl THC cutoff.

Any help is appreciated, thanks!

If you have a Px, I don't see what the problem is.