Quote Originally Posted by cellery
Just back from an independant lab that tested my urine. I passed. You think I'm still safe? Do labs test different ways? Ugh, I'm really nuts over this.
If you passed what are you worried about? If a lab uses immunoassay then GC/MS to confirm positive results, there can be slight differences between the type of immunoassay test used but the GC/MS is pretty much standard across the board. There is one immunoassay test that is better for pot smokers than some of the others but overall the difference is none.