Should You Worry about False Positive Adipex Drug Test Results?

by moderator on December 19, 2011

adipex urine test

Today, it is becoming more and more common for drug screening tests to be part of a company’s hiring process. While this isn’t a requirement in every industry, it is commonly a stipulation for construction workers, state and federal employees, hospital employees, factory workers and semi-truck drivers to name a few. While this isn’t a problem for most people, those who are taking Adipex-P diet pills may worry about their Adipex drug test results.

Why the cause for concern? Users of the appetite suppressant worry that the Adipex drug test will result in a false positive. In other words, the weight loss medicine will look like an illegal substance and make it seem like they are taking an illicit drug when they are not, which would prevent them from being hired.

Does this concern have any merit? Yes and no. Yes, because it is quite possible that the initial Adipex drug test will cause a false positive if it picks up the chemical in your system. No, because, even if the first analysis concludes you have drugs in your system, a second test will be run to pinpoint the exact substance. The second screening will identify the real chemical and will reveal that the person’s system is clean of the narcotics, etc. they are testing for.

Why would Adipex drug tests lead to fake results? The reason is Phentermine hydrochloride. This is the active ingredient in the weight management formula and it is a sympathomimetic amine. Therefore, while it is not an amphetamine, it is very similar, which can trick the first screening process into thinking it is an amphetamine.

How long does Phentermine stay in your body? It could remain in your system anywhere from 1 – 4 days, depending on certain factors such as your metabolism or even how much water you drink.

What should you do if you need to take an Adipex drug test to be hired for a job? The following are two tips of advice:

  1. Let the company and/or tester know that you are taking this appetite suppressant. While you may not want to share your personal life choices, it is better than the embarrassment you may feel if your initial drug screening comes back positive.
  2. Make sure an additional test is performed if it is needed.

Finally, it may be a good idea to talk to your doctor about your concerns. He or she may be able to help you determine the best course of action regarding your upcoming Adipex drug test or provide you with insight that will help calm your uncertainties about the process.

{ 4 comments… read them below or add one }

Jerica August 28, 2017 at 7:52 pm

Im in a custody battle and i got fenfast and im scared to take it , because of failing urine and hair follicle test. Will it show up as a narcotic drug?


Candi December 3, 2015 at 12:37 pm

Hi my name is Candi and my husband has been taking Fenfast 375. He had to take a DOT drug test this morning will this show up positive ? If it does will you please leave a note so we can show to his employer that this is not a narcotic but a dietary supplement used for weight lose so his job will not be in jeopardy. Thank you so much for your time.


moderator March 13, 2016 at 6:24 pm

FENFAST 375 is not a narcotic. In fact, all of the ingredients in this safe product are 100% legal, so there will be no issue at all with a drug test. You can put any worries regarding this to rest. Thank you so much for reaching out to us.


Sabrina June 7, 2016 at 2:03 pm

Thank you for asking this question Candi. I have been taking Fen Fast for about 2 months now and am schedule for a drug test. That was the first thing that came to mind. can you let me know how your husbands drug test went?


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