The duration that Adderall (a medication containing amphetamine and dextroamphetamine) stays in your system can vary depending on several factors, including the individual's metabolism, dosage, and frequency of use.Adderall can typically be detected in a urine drug test for about 1-3 days after the last dose. Adderall is usually detectable in a blood test for about 12-24 hours after the last use. Adderall can be detected for about 1-2 days after the last use. Online buy adderall overnight