I am taking a very important exam this coming week and need to focus for it. I used to be prescribed to Adderall up until last year, and still have some of my prescription left that I take in times of need (not drug abuse needs but tests and times of focus). Following my exam will be a drug test. My question is if i take adderall in the morning for the test, will it then show up in the drug test some hours later in the day?