Is it true that on a drug test adderall (dextroamphetamine and racemic amphetamine) is the same as methamphetamine?

Yes: Adderal is in the amphetamine class but if legitimately, and verifiably prescribed will not be a problem on any work place screening where amedical review officer is involved.

Yes and no: Adderal is mixed amphetamine salts, and most screening tests only look for amphetamine, so both methamphetamine and adderal will show the same. However, on definitive tests (chromatography, mass spect and others) the difference between methamphetamine and amphetamine salts can be shown in most people.