Just say that you're taking a med that will give a FALSE positive and REFUSE the test!
For example Selegiline which may be used as an antidepressant will give a false positive for amphetamine
Deprenyl and False postive testing ? - BrainMeta.com Forum
Get a script if you can, clean up for a month and then take the test
There are none for marijuana with current testing methodologies.
