honestly..in the state of missouri...they test for pot..crack...cocaine...meth..any narcotic pill...and for certain chemicals that are used in making meth or any man made substance...your best bet is to smoke the day after your tests and then go dry for the rest...they will probably do your testing once a month and they will notify you of the dates...missouri doesnt really do much against marijuana...IN SMALL amounts...so exactly how much did you have?