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Can you fail a drug screen by taking phentermine? How long is it out of your system?

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Anonymous 14 Sep 2011

it is an amphetamine and it could show as methaphetamine, although it is not supposed to. If you have an rx for this, you need to bring it with you for the test. It is going to be at least 3 days before you test clean after the last dose. Patti

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