Would Adderall 30mg XR show up in a regular Lithium level blood test if the last dose of Adderall is taken 2 days before the Lithium level blood test? I've heard that tests performed such as a Lithium level blood test, that the doctor typically only looks for the Lithium level specifically? Also, I've heard that Adderall typically shows up on blood tests for only 12-24 hours? Any advice would be appreciated. Thanks!