Does adderall and Ritalin show up the same in a drug test?

They are both Amphetamines and will show up as such on a drug test. They cannot distinguish what type of Amphetamine you took at an earlier date, only that Amphetamines were in your system. Most drug tests will not pick up on this drug after about 3 to 4 days later, but a hair test will! So I'd use a Hair Follicle Shampoo! Good Luck