Will diethylpropion show up in hair follicle test?

According to this link, the majority of the metabolites of this drug are pee'd out within 48 hours of the last dose. If the urine drug screen is testing for amphetamines (which most do), it will render a positive test only if the metabolites in the urine are above the specified testing cutoff. So if your last dose of the drug was more than 48 hours before the pee test, you should be OK.