This question has also been asked and answered here: How long do amphetamines stay in your system?
I presume you mean adderall or its generic equivalent. A one (1)- single dose tablet/capsule will remain in your urine 72 hrs, bloodstream drug availability=96 hours.However, if you've taken this drug therapeutically for some time, even, lets say 8 weeks.Upon sudden discontinuation of the drug, you can expect your urine to show a positive result up to 7 days, after the last dose.
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