the 5 things they usally test for (called the nida 5) are marijuanna , cocaine, phencyclidine (pcp), opiates, amfetamines. so go eat some acid or mushrooms and be safe!
They test to see if you are doing illegal drugs.
cannabis
amphetamines
opiates
opioids
cocaine
barbiturates
So make sure you bring some clean pee with you in a bag.