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I'm assuming you meant TEST results? If so Adderall and Concerta MAY cause a positive drug test for amphetamine containing drugs (ie meth). it depends on when you took them and for how long, also, urine concentration is a BIG factor (never do a drug test with your first urine of the day). However, generally speaking Adderall and Concerta usually out of your system in 24-48 hours if you arent a regular user. If you have a prescription for these drugs or any other similar drugs like Ritalin then you should inform the person administering the test BEFORE HAND.

hope this answers your question

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14y ago

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