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Uh, having methamphetamine in your system!

But other sources say the following can also cause false positive results:

Desoxyephedrine, Desoxyn, Methedrine, Vicks Inhaler

(non-prescription drug), Selegiline, Benzphetamine

and Famprofazon, Dexedrine, Benzedrine, Adderal.

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14y ago

What else can I help you with?