Thanks so much for the info. Basically, what you are saying is, it's not worth the money for a company (even a fortune 500 pharmaceutical company like the one I am applying to) doing a pre-employment screening to spend the money out of the gate on a GC/MS, and if it is a positive result, then the GC/MS is a failsafe with an exact number associated with it to confirm, correct?

I have read the thread you referred to before (and many times since). I don't completely understand the science of what you are saying (and thus the subsequent logic behind it). If the two tests are somewhat "functionally equivalent" what is the use of GC/MS?
Sorry, I don't mean to be thick or waste your time, just don't understand completely.

I have been testing negative on the first void of the day for about a week now (while still strenuously exercising the night before with a no fat diet). Yes, I am being very neurotic/paranoid and trying to have all bases covered for my test on Friday. I plan on drinking a couple g*t*rades a few hours before the test with a couple cups of water, a few glasses of water an hour before, and moderate versions of the rest of the dilution sticky. Reasonable plan? I don't want to go overboard and get a dilution, but I don't trust the results I have been getting in the eleventh hour. Again, sorry, just a newbie with all this.... Will stop bothering you after this.

Thanks so much for your attention to this. You've been very patient.