My son was complaining about how adderall made him feel so I took a 20MG dose to see. I didn't even think that I was taking a stimulant that could make me fail a UA for a new job I'm starting. How long does it stay in your system. Can anyone help me with this answer?

A single dose won't stay around long - half life of about 6 hours. I'm guessing, but I'd say it would be detectable (as metabolites in urine) for perhaps 2 days after you took it?