Adulterant panels do exist!
Most screen-level (piss cup tests) include: pH, low creatinine, low specific gravity, and oxidizing agents: nitrite, chromate, and bleach.
Who knows if there is a GC/MS adulterant skew they throw in knowing what some of these products are. It sounds easy enough to do.
I am warning everyone that adulterant panels and low-tolerance screen levels do exist. Any industrial/security jobs require GC/MS, a "test" panel, and adulteration tests to be performed on the screen. There are even some cases where they pay for the "adulterant" assay. Mine does! How do I know: I saw the forms. So who knows what your probation officer/employer/medical professionals do in order to catch you. If you fail your adulterant panel, even if it is bleach for the love of all that is holy, you are still failing that drug
test. Regardless how clean you are. It'd be ironic to consider someone passing it normally but failing because they detected some funky compound used. And trust me, they know about sure-gel. The question is how much do they want to pay to nail you against the wall.
The real danger is the low-tolerance threshold. No matter what you eat, if your THC screen threshold is 150ng/mL, you are screwed. If you are ever so lucky to have 100ng/mL, you are never going to adulterate that except naturally. (Typical tests are 200ng/mL for cheap cups.) If you are going to be screwed, they can get as low as 50ng/mL. You won't win at that level, I promise.
Be smart: know how you are being tested, your panels, and exactly what they are performing, and you need to know more if your drugs
of choice are isomers/stereoisomers or functional analogs of drugs on that panel, as it could trigger false positive without a GC/MS. Post-accident work drug tests sometimes cut out the screening bullcrap and go straight for the GC/MS. This is to prevent any legal troubles. It is easier to pay $300 to get a full-blown lab spec than to pay out your worker disability. :\
Keep this in mind folks! Regardless if your GC/MS vindicates, you simply do not want to piss off a probation officer by having a positive test each time thanks to research chemicals
as alternatives. Also you definitely don't want any surprises being pulled with adulteration. They are full of surprises: a hair test could be possible. Don't hinge your bets if you are in legal trouble on a product you buy a headshop
. Jail isn't worth blaming on some gel! (heh, they rhyme)