Not an amphetamine. It is a central nervous system stimulant. It is completely eliminated in 24 hours. Adderal on the other hand is amphetamine and shows for up to 5 days depending on how often you take and your body mass, ag, etc. Ritalin can show as a false positive for amphetamine but that would be cleared up at the lab and is not common. Hope this helps.
Ritalin is NOT an amphetamine. It is a CNS stimulant. I have never had it show up at all. It is completely eliminated from the body in 24 hrs, just in case it is being specifically tested for