An initial Immunoassay screen (at a 50 ng cutoff limit) is done first. It would be way too costly to use the 15 ng GC/MS as the primary analysis.

Even on the off-chance that the GC/MS is used first, dont let it worry you. A 50 ng Immunoassay is functionally equivalent to the 15 ng GC/MS. For more info on this, read post #22 in this thread: http://boards.cannabis.com/drug-test...aking-out.html
Burnt Toast Reviewed by Burnt Toast on . Help asap please If you pass a first check test first thing in the morning, is it a guarantee that you will pass a pre-employment drug screen on any day from then on? The line is a little faint, but it is a line. Picture below. Will exercising between now and the drug test alter the results? Would one be fine to take a drug test in a week and pass for sure? I've researched a lot but I'd really love some reassurance. Thanks Rating: 5