Will Phentermine Show Up On A Drug Test?
One concern for many people taking phentermine is that phentermine is said to give a false-positive result on an employment drug test.
In response to the many questions, we’re asked about phentermine and drug tests, here we explain more about the drug screening process, why phentermine can give a positive result, and how to avoid these causing problems with your employer.
Keep reading, or check out the infographic below, to learn more about phentermine showing up on a drug test.
What Does The Drug Test Look For?
The most common drug test method is urinalysis, which will most typically test for five categories of illegal substances. Known as a 5-panel drug screening, this test looks for evidence of THC, Opiates, PCP, Cocaine, and Amphetamines.
Drug testing is an action an employer or prospective employer can take to determine if employees or job applicants are using drugs.
Rather than acting as a test of impairment or whether recent behavior is the result of drug use, employment drug tests are implemented to create a safe working environment for all employees. Workplace drug testing aims to deter employees or potential employees from taking drugs, identify and help employees with drug and/or alcohol problems, protect the general public, and comply with employment laws and regulations.
In the event of a positive result in both the initial and confirmation tests, the medical review officer (MRO) then reviews the results and contacts the individual to ensure that there are no medical or other reasons for the result. It is only at this point that the MRO may report the results to the employer.
Certain medications can cause a false-positive result on the drug test. If this is the case and the employee can verify that he or she has been prescribed the medication and is taking it as instructed, then the test is reported as negative.
Safe and effective - without showing up on a drug test.
PhenQ is recommended by 190,000 people like you who want to lose weight fast and effectively without the fear of a positive drug test.
Will Phentermine Show Up On A Drug Test?
Phentermine can show up on a drug test as a false positive for amphetamine. Although phentermine is not an amphetamine, its chemical structure is similar to that of amphetamine, meaning that phentermine can give a false-positive result for amphetamine in a 5-panel drug screening urinalysis.
However, following the information above, with evidence of your prescription from the doctor who prescribed your phentermine, the result should be declared negative.
A key factor is that you have to have been taking it as directed, so this is another reason to be sure to follow the prescription and not to take more than directed by your doctor.
If you have been taking more than the recommended dosage, then excess levels of phentermine might raise questions for the MRO reviewing the positive result.
Although phentermine is not an illegal drug, it is a controlled substance, listed on page 12 of the Drug Enforcement Agency’s January 2016 List of Controlled Substances, and can only be legally obtained by prescription.
If you cannot provide a prescription to explain the presence of phentermine in your system following a drug test, then this would be considered illegal usage, and the MRO may insist that the positive result stands.
If you know that your employer may request a drug test during the duration of your phentermine prescription, then in some circumstances, it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
How Long Does Phentermine Stay In Your System?
Phentermine should not be detectable in the urine after a period of around four or seven days. Although this varies depending on the person and their urinary pH, phentermine (Adipex) has a half-life of about 16-31 hours under normal conditions. It may, however, be detectable for longer if you were taking more than prescribed or used phentermine for a long time.
Due to confusion between phentermine and the now-banned weight-loss medication Fen-Phen, as well as a general misunderstanding of what phentermine does, many phentermine users choose to keep phentermine a secret. Therefore, it is not surprising that some people may prefer not to disclose that they are taking phentermine to their employer.
To avoid the possibility of a false-positive result, if you are aware that you will have a drug test soon, you may prefer to stop taking phentermine for a few days.
If you’re concerned about a false-positive result on a drug test due to phentermine, then another option is to take a phentermine alternative such as PhenQ instead of phentermine. PhenQ will not show up on a drug test as they do not contain ingredients similar to amphetamine, so you can benefit from the appetite-suppressing effects and energy boost without worrying about failing an employment drug test.
Safe and effective - without showing up on a drug test.
PhenQ is recommended by 190,000 people like you who want to lose weight fast and effectively without the fear of a positive drug test.
Frequently Asked Questions
What is the half-life of phentermine?
The half-life of phentermine is around 16 to 31 hours. However, the drug’s half-life will vary depending on each person’s metabolism and the pH of their urine.
How long does phentermine stay in your urine?
Generally, phentermine will no longer be detected in the urine 4 to 7 days after the last dose was taken. However, the detection period could be longer if phentermine has been taken at a high dose or for a long time.
What does phentermine show up as on a drug test?
Phentermine can show up on a drug test as a false positive for amphetamine. This is because, despite being different drugs, phentermine and amphetamine have a similar chemical structure.
If you can provide your employer with evidence that phentermine has been prescribed for you, then a positive result for amphetamine should be declared a false positive.
Can I get fired for taking phentermine?
If you take phentermine without a prescription, your employer may view this as illegal usage of the drug. This could result in disciplinary action.
Phentermine is not illegal, but it is a controlled substance. This means it should only be taken if you have a prescription.
Will phentermine show up on a military drug test?
Phentermine may show up as a false positive on a military drug test as it might register on an initial urine screening test for amphetamines. If this happens, another analysis will be conducted for confirmation. Phentermine will not cause a positive result on the confirmation drug test or be reported as positive through the military drug-testing program.
In 2018, the Defense Health Agency (DHA) added four generic weight-loss medications to its pharmacy formulary, including phentermine. The idea is to make more FDA-approved weight-loss therapies available to TRICARE patients but also give active duty personnel struggling with weight some alternatives for meeting standards. The documentation notes that “Active Duty Service Members requiring a weight loss drug should be enrolled in a Service-Specific Health and Wellness Program and must follow individual service policies.”
Will phentermine show up on urinalysis?
If you have taken phentermine, a urinalysis performed to screen for drugs may give a false-positive result for amphetamine. This is because of the chemical similarities between the two drugs.
However, if you can provide evidence that a doctor has prescribed phentermine for you, the result should be declared a false positive.
How can I pass a urine drug test for phentermine?
If you take phentermine, it is advisable to provide your employer with a copy of your prescription before you take the drug test. This proves that you are taking a controlled substance in the manner it was prescribed, avoiding the need for an explanation if the test should return a positive result.
How long does Labcorp take to provide urine results?
Labcorp aims to complete urine testing within a few days, but result delivery times for more complex tests may take longer. However, all tests are usually completed within two weeks.
If you request testing as an individual, your results can be accessed by logging into your Labcorp patient portal account. If your employer requests a drug test, the results will be sent directly to them.
Will Labcorp call you if you fail a drug test?
No, Labcorp will not call you if you fail a drug test. A drug test that detects an illegal substance will either be reported on your patient portal account or sent directly to your employer.
However, Labcorp may call you if they require you to provide a second urine sample, for example, if the first sample was contaminated or invalid for another reason.
How long will phentermine be detectable on a hair drug test?
Phentermine may still be detected in a hair drug test even if you have not taken phentermine for a month or longer. When comparing blood, urine, and hair drug testing, phentermine remains detectable for the longest period of time in the hair.
Does phentermine show up on a 10-panel drug test?
Phentermine may be erroneously categorized as amphetamine as part of the 10-panel drug test, as testing for amphetamine forms part of this particular test. Amphetamine and the other drugs screened for in a 10-panel test are chosen as they are the most commonly misused drugs in the USA.
The panel also includes cannabis, cocaine, barbiturates, opioids, benzodiazepines, phencyclidine (PCP), methaqualone, methadone, and propoxyphene.
Is Adipex a narcotic?
In countries including France, Adipex is considered to be a narcotic. However, in the USA, generic and branded phentermine (such as Adipex) belongs to a group of drugs called sympathomimetics or CNS stimulants.
Is phentermine meth?
No, phentermine is not meth. Phentermine is an isomer of methamphetamine or meth. This means that the two substances are made up of the same atoms, but the atoms are arranged completely differently.
This difference is very important, as it gives the drugs different properties. Despite sharing the same group of atoms, the structure of phentermine makes it far less potent than methamphetamine.
Will Topamax show up on a drug test?
Most drug tests do not test for topiramate or its metabolites. It is, therefore, unlikely that Topamax (the brand name for topiramate) would show up on drug testing.
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I too am on methadone I started taking Phentermine/adepex aprox 6 plus months ago I dropped 50+ lbs so far, I have random urine tests at the Methadone clinic every month & not one time have I tested positive for my Phentermine/adepex I do have prescription at hand and always am prepared to hand it over if ever needed to but so far I have never had a false positive or not even shown a positive for Phentermine so I’m not sure what the clinic here even tests for but so far they have not accused/asked me for any reasons or proof of prescriptions why a urine test would be positive for drugs not allowed/against the rules without a proper prescription anyways I do believe that Phentermine is not a drug that easily causes false positives on a 10 panel drug screen…I actually had a false positive one time in 3 yrs of a illegal drug that I certainly have not done in 30 yrs & yes it was proven & I was cleared completely & that was before I started the Phentermine I only can think that Benadryl could have made that a false positive… anyways so in my case Phentermine has never even been detected & I do have a prescription if ever need for such an occurrence
Hi! I am currently on methadone as well as phentermine. I have a once a month random urine analysis and for the past 3 months I have tested positive for both methadone and amphetamines on the UA. However this past UA it showed as positive for only methadone. I take my phentermine at the same time everyday and have never missed a dose since beginning the medication. How is this possible? Any input is greatly appreciated! Thanks so much!
Hi Laura,
The results depend on the type of test. More than that, it’s hard for us to know what might have affected the results, unfortunately.
You are more than welcome to join our official Facebook support group so you can share your experience with other phentermine users and get feedback on your particular situation: https://www.facebook.com/groups/1069871763087734
Best regards,
Sally, Phentermine.com
I began taking Phentermine on Oct 17th. In both Nov & Dec, I tested Positive for Amphetamine. Then, somehow, in Jan I didn’t.
Yesterday, I was told by my Drs office that I had a Positive drug screen in both Feb & March for METHamphetamine.
Yesterdays screen was again only positive for Amphetamine.
Obviously there are some inconsistencies somewhere.
I am fighting this. I have requested a Hair Follicle test to invalidate those results, as they are most definitely inaccurate.
My question is; is it even possible for this medicine to show as actual METHamphetamine?
Hi Amanda,
That shouldn’t happen. However, it really depends on the type of test. As you know, phentermine does have a chemical structure similar to amphetamines, so phentermine weight loss pills can cause a false positive on 5-panel drug screens.
To avoid the possibility of a false-positive result, if you are aware that you will have a drug test soon, then you may prefer to stop taking phentermine for a few days.
In some circumstances, it may be better to inform the lab that you are taking phentermine and provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
Sarah, Phentermine.com
Hi Amanda. Im taking methadone and phentermine and have a random monthly urine drug screen. The past 3 months or so I have tested positive for both methadone and amphetamine but this past test a couple weeks ago I only tested positive for methadone. I have not changed anything. I have never missed a dose of my phentermine. How in the world is this possible? The same lab has performed the drug screening with the same methods. I do not understand this. There has been no change to anything. How can it show up one month and not the other???? I am extremely upset about this!
I have taken Mexican Phentermine and I’m afraid it shows on a drug test. What should I do if I don’t have a valid Prescription?
John just stop taken them for a few days I take the Mexican pills aswell they’re called axion but they are phentermine,I go to pain management and I get urine tested so I need to stop taken the pills for a few days I wasn’t aware of phentermine come out false positive for other type of drugs
Can any fat burning over the counter product show up as a false positive
Hi Steve,
Most fat burners use natural ingredients that are not restricted and should not affect your testing results.
Sarah, Phentermine.com
I just took a drug test and phentermine did show as positive for amphetamine. My personal opinion is that it depends on the type of drug test because my Dr office ran a drug test on me and it didn’t show up on theirs.
Hi Jane,
Glad to hear it. Thank you for sharing your experience.
Sarah, Phentermine.com
Last night I had to take a urine drug tests with a split 5 panel. I am taking Adipex for weight loss & have been for about 3 months now. The drug test showed positive for amphetamines. I explained what I was taking, showed them my prescription bottle, & chart information from my doctor. Now I’m just waiting for the call from the MRO at Medtox, which I’ve heard can take up to 7 days. At least I’ll get back pay onde I prove I have a valid prescription for it.
Hi,
I recently had a drug test for work and took phentermine 7 days prior. I took half a pill for about 3 days then stopped because of the side effects. I was drug tested 7 days later.
It’s been about 2 weeks now with no call yet. I’ve learned that this is not an acceptable prescription in the industry that I work in so it has me worried.
I know it’s impossible to to know for sure, but is it likely that it will show up in the test? Thanks.
Hi Kelley,
Depending on the type of test, phentermine might not even show up. Also, phentermine should be out of the system in 3 -4 days after the last dose.
Hope that helps! You are also more than welcome to join our official Facebook support group: https://www.facebook.com/groups/1069871763087734
Rebeca, Phentermine.com
I took a half of a adipex Tuesday night an I took a drug test Thursday morning I had a 38 hour time line I have never took it before in my life do you thank I should be good ???
Hi Crit,
It really depends on the type of test. Unfortunately, there’s always a possibility that it could show a false-positive.
Phentermine should be out of the system in 4 days after the last dose.
We wish you the best of luck,
Rebeca, Phentermine.com
So I was wondering We had an oral drug test would it come up on that ?
Hi Josh,
There is a possibility that it could show up as a false-positive.Your best bet would be to provide proof of your prescription if this is the case.
However, it really depends on the type of test and other factors we explained on the article.
We wish you the best of luck,
Rebeca, Phentermine.com
I have a drug test that they just inform me about it. My medication is Rx by a doctor. My question is… I have to get the bottle with me as a proof of my Rx to the lab or I will need a confirmation from the pharmacy?
Hi Maria,
We can’t be 100% sure but showing the bottle with your name on it should provide enough proof of your prescription. Also, depending on the type of test, phentermine might not even show up.
Hope that helps! You are also more than welcome to join our official Facebook support group: https://www.facebook.com/groups/1069871763087734
Rebeca, Phentermine.com
I was taking adipex & was getting drug tests that were being sent to the lab. I never once tested positive for it & never tested positive for it for probation neither. Every article I’ve read insisted that it causes false positives for amphetamines & meth but it never did for me.
Hi Jenny,
Thank you for sharing your experience with us.
Best regards,
Rebeca, Phentermine.com
Thanks..
I took a 37.5 phentermine on a Saturday morning and got a random UA done the following Thursday will that show up as a positive
Hi Natalie,
Phentermine should be out of the system in 4 days after the last dose.
In some circumstances it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
Rebeca, Phentermine.com
Hi if I take adepix at 11am today will it show up on my drug test today at 3pm?
Hi Kim,
Yes, depending on the type of test, it could show a false positive. If this occurs, you can present evidence of your prescription.
Best of luck,
Rebeca, Phentermine.com
I last took 30mg of phentermine on Saturday and I have a urine test in 11 days. Will I pass? I have been taking it on and off for over a month.
Hi Patrice,
Phentermine should be out of the system in 4 days after the last dose.
In some circumstances it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
Rebeca, Phentermine.com
Hi Tracy,
With evidence of your prescription from the doctor who prescribed you phentermine, then the result should be declared as negative.
If you know that your employer may request a drug test during the duration of your phentermine prescription then in some circumstances it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test.
Hope that helps!
Rebeca, Phentermine.com
Hola, tuve un test de droga pre-empleo el Martes 21/07/20; tomo Phentermine 37.5 mg. Pero la última píldora que me tomé fue el Sábado 18… es posible que salga positiva en la prueba?
Me tomaron de orina y 6 paneles de sangre, pero no me dijeron cuáles!!!
Hola Guadalupe,
Sí es probable que salga un falso positivo pero no es completamente seguro. Depende de la prueba.
En caso de que salga positivo, siempre tienes la opción de mostrar tu receta médica y el resultado debe declararse como negativo.
Mucha suerte,
Rebeca, Phentermine.com
I am taking Phetermine in combination with phendimetrizene,had take urine drug screen,what happens if comes back positive for amphetamines,I prove I have script for phetermine,but MRO doesn’t accept explanation ,meaning could say Phetermine won’t cause positive?anything I can do?i don’t wanna lose my job
Hi Brian,
With evidence of your prescription from the doctor who prescribed you phentermine, then the result should be declared as negative. Also, depending on the type of test, it might not even show up at all. Just make sure you have your prescription at hand.
Rebeca, Phentermine.com
Hello, I take my phentermine as prescribed. I drive professionally and I’ve had no problems doing my job and they don’t drug test. However I’m going to be tested for a new driving position delivering plants and flowers. Do you know if I will be accepted with my prescription and a possible false positive? I want to tell my boss but I’m afraid that it will disqualify me. I could stop taking the medication but I also don’t want to hinder my progress because soon I’ll be on my two month break from the drug. I think that I’m on it 3 months and then off for 2 months.
Hi Karen,
Thank you for reaching out. To avoid the possibility of a false-positive result, if you are aware that you will have a drug test soon then you may prefer to stop taking phentermine for a few days. We are often asked how many days phentermine stays in your system, and although this varies depending on the person and their urinary pH, the medication has a half-life of about 16-31 hours under normal conditions. So, phentermine should not be detectable in the urine after a period of around four or seven days. It may, however, be detectable for longer if you were taking more than prescribed or used phentermine for a long time.
If you know that your employer may request a drug test during the duration of your phentermine prescription then in some circumstances it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
We hope this helps! Good luck in your job interview!
Rebeca, Phentermine.com
If I took adipex 37.5 Friday morning and did not take it again and had drug screen on Tuesday will it show up
Hi Bill,
Unfortunately, phentermine is usually detectable in urine for about 4-7 days after the last dose. Here we explain more: https://www.phentermine.com/blog/will-phentermine-show-drug-test/
Best regards,
Rebeca, Phentermine.com
If I took 1/2 of. A phentermine at 4:00 am on Thursday would it show positive on Friday at12:00
Hi James! Yes, it’s possible that the medication will show up on the drug screen. Be prepared to show your prescription just in case.
Sally, phentermine.com
Not really sure about phentermine, but other drugs, such as Adderall, for example, can be really dangerous and addictive. If you feel like having an addiction to any kind of drugs or smth, you can easily apply for https://addictionresource.com/addiction-and-rehab-hotlines/ It’s a great rehab center that will help you with ant difficulties.
WOW just what I was looking for
I stopped phentermine 2 months ago exactly. I have a hair follicle on Monday! The 5 panel hair follicle will I fail?
Hi Amanda,
With evidence of your past prescription, the result should be declared as negative. Also, depending on the type of test, it might not even show up at all.
Rebeca, Phentermine.com
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I have been on it for a month and a half just took a drug test and it tested positive for meth somedays I take 1 and a half but not on the day of the test will I pass?
Hi TJ! Phentermine typically stays in the system (and is detectable in urine) for about 4-7 days, and sometimes longer if you’ve been taking it for a long time or at high doses. So, if you’ve taken phentermine in the last week, it’s likely that it will show up on the drug screen. We’d recommend that you go prepared with your prescription in-hand, just in case.
Best regards,
Rachel, Phentermine.com
I have to take a drug test for new employment but I’ve been on Phentermine for a month now my question is what do I do should I tell them? I really don’t won’t to lose this opportunity and I also haven’t taken any in 2 days but I am just scared
Hi Nina 🙂 Phentermine is legal as long as you have a valid prescription, so many employers will accept a positive result as long as you bring the current prescription (depending on the prospective industry and job functions, of course). Good luck!
Rachel, phentermine.com
Hi- I have a job interview on Monday (7/15) at 3pm and my last phentermine pill was at 7am thursday at 7am (7/11). The pill is 30mg. They will be conducting a mouth swab test. I plan not to take any more phentermine. Will it show up on the mouth swab test? I took it for 18 days and this will be 104 hours since taking phentermine I do have a prescription for it.
A 10 panel UA tests separately for Amphetamine AND Methamphetamine. Is it possible for Phentermine to create a false positive for both on a 10 panel test?
I been on phentermine 37.5 since November 2018. I just to drug test and it came back positive for COC! I have took other drug test due to my job which they come up randomly and never produce a positive result before taking this medicine!
Hello I took Phentermine diet pill on Wednesday morning and had a mouth swab drug test Friday will it show up? Please help kinda freaking out because I don’t want to be dismissed from pain management.
Were you dismissed?! I have an appointment with pain management tomorrow, I had no idea this could get me in trouble!
I took a random urine drug test and and I failed for amphetamines. MRO called 3 weeks later to ask if I take prescriptions for this and I told them that I do not take amphetamines, but I do take Phentermine. MRO then proceeded to tell me that it would not cause me to fail for amphetamines. What can or should I do?
I just had the same issue today with my company and I don’t know what to do?
Yes it can cause you to fail for amphetimenes. It is chemically similar to an amphetimene. They can do a confirmatory test to show exactly what you took. Ask them for that test if your phentermine is legally prescribed.
Would sudafed show the same as phentermine
I have been on Phentermine for a while now. I took a hair test and it came back positive for meth. I have never taken meth in my life nor any other illegal drug. I stopped taken phentermine. I took a mouth swab and UA for Cps both were negative. I took another hair test and it’s negative. Could the pill phentermine came back positive?
Hi Joella! Yes, phentermine can cause a false-positive for amphetamines (meth) due to the substances’ similar chemical structures.
Rachel, phentermine.com
How long were you off of the phentermine for your hair to come back negative?
Failed urinalysis drug screen after taking phentermine
What did MRO tell you? Did they accept your prescription?
We do lick testing how long is it Detectable
Hi Ged,
Maybe this can help: https://www.phentermine.com/blog/will-phentermine-show-drug-test/
Best regards,
Rebeca, Phentermine.com
Can phintermine be detected threw a saliva test
Hi Dakota,
Yes, phentermine could be potentially detected through saliva. If you know that your employer may request a drug test during the duration of your phentermine prescription then in some circumstances it may be better to inform your direct supervisor that you are taking phentermine and to provide proof of your prescription before a drug test. This will avoid you having to retrospectively disclose that you are taking phentermine and the possibility of a false-positive reading being declared to your employer.
Rebeca, Phentermine.com
What did it show up as?
Hi Jeni! Phentermine can sometimes produce a false positive for amphetamines.
Rachel, phentermine.com
Hello i took 1/2 a phentermine on saturday 7 am and had a drug test wednesday 11 am will this show on my drug screening?
Did you had any problems with your results??
Hi,
I took 1/2 of a phentermine this morning & have a drug screen today or tomorrow. Will it show eventhough it was just half?
Hi Linda, yes – it’s possible it will. Be prepared to show your prescription just in case.
Rachel, phentermine.com
Hello I took axcion phentremina from Mexico with a prescription from there. I took it for about 8days. I will have a drug test some time next week. Will phentremine come up as a positive after being off it for about 12 days?
Hi Jay! It probably won’t show-up in your urine, but it may still show in other forms of testing. Either way, be prepared to show the prescription since speed of metabolism & elimination varies between people and depending on a variety of other factors.
Rachel, phentermine.com
Hello will phetermine pill show up on mouth swab test. My last pill was yesterday at 10 am .. i have drug test today at 1
Can taking more than the prescribed amount of phentermine male u fail a test?
Hi Jim, yes – phentermine is chemically similar to amphetamines, so taking any amount of phentermine may result in a positive drug test. If you take more than prescribed, it is more likely to show up for longer. Be prepared to show your prescription just in case.
Please note: for safety reasons, you should NEVER take phentermine more often, or at a higher dosage than prescribed by your doctor.
Rachel, phentermine.com
I just need to know if this 30 mg phentermine will show up in a hair test as I don’t have a prescription For it I been taking one a day to lose weight for about two weeks and I just got called today for a job on a rig and they do hair test now I’m worried
Hi Rudy. Yes, it’s very possible that the phentermine would show up in a hair test if you have been taking it everyday for 2 weeks.
Rachel, phentermine.com
What happen with your results? I’ve been off phentermine for 2 months and have a hair follicle and I’m worried. I don’t have a script for it.
I was taking Phentermine 37.5mg for about a month or 2. Since then I was put on Probation and they asked me to stop taking it due to a positive amphetamine panel in my urine. I havent been taking it for a whole month now and its still showing up in my urine. This past week my amphetamine level even spiked up and I honestly haven’t taken not one dose. Why is it that this is happening?
I was taking Phentermine 37.5 , for about 1 week ( skipping 1 or 2 days through out ) . I then took a urine test , which tests for 17 different illegal drugs and parscription.medsp .
I hadn’t taken the Phentermine from Sunday @ 11 am, to Wednesday at 4 pm …. So, about 77 hours off them. I’m worried , Yes I have a script but I do not want it to show up or have to explain. I obviously will, if needed . Amphetamines are cleared from urine, in about 3 days . Is there a difference with the Phentermine and the amphetamine that way ( I’ve saw it saw ” 4-7 days for phen” ) .
Hi!
Phentermine can indeed take up to 7 days to flush out of your system. There’s no hard, fast rule about how long it takes because it varies, depending on factors such as time under phentermine treatment, age, etc.
We hope everything turns out right!
Regards,
Marko
Phentermine.com
I don’t see why there would be a problem with pre-employment drug screening if the medication is prescribed. I was screened for my current job and many times prior as required by all facilities when I was going to college and never had a problem. They used a 12-panel drug screen. I was taking phentermine, tramadol, and ambien (not all at the same time). I never received a call to verify my scripts but now there is registry for all controlled substances that a provider can access to determine what meds have been prescribed, by which doctor, which pharmacy filled the script on what dates, and the exact dose prescribed of all meds filled in the past 12 months. I work in healthcare and have easily verified scripts with this system to determine if the patient has the med prescribed or is using illegally.
I recall years ago when I was under a doctor’s supervision while taking Phentermine, I was unexpectedly rushed to the hospital due to an allergic reaction from an insect bite (not Phentermine!). My urinalysis tested “positive” for the drug and I recall the nurse telling me “we have a problem” meaning the Phentermine had shown up in the test. She questioned me and I told her I was taking it under a doctor’s care. She didn’t go any further by asking me to provide proof from the doctor, but I supposed she could have. So I would say if you are taking it, yes it will be a “red flag” to a prospective employer unless you prove it is legal. If found illegally, you probably could be fined or arrested. I know it sounds ridiculous, but the law is the law. So if you take a drug test, be aware the test WILL find this substance.
I’ve taken a dope 37.5mg for 2 months,my last one was taken a week ago.I test weekly and it’s never shown up,but I’ve also let them know and see my script. However my primary doctor tested me two weeks ago sent it to lab and found it…she was upset because I’d went to another doctor/dietician to get them as she refused to after a script of one month.She told me if I tested positive again she’d stop all my other meds which are all non narcotic.Im very upset as she is trying to tell me I cannot see her if I see other doctors.Shes only a practicioner.Is she breaking medical laws?I pay all out of pocket to see my dietician.
Hi April – Your doctor may be concerned about the possibility of dangerous drug combinations if you’re receiving prescription medications from different physicians, especially when she specifically refused to prescribe phentermine. She may also be worried that you’re still taking phentermine if she had a specific reason for halting your prescription. So, we would suggest speaking with her about your phentermine use (both why she doesn’t want you to take it and why you do want to take it) to see if you can reach some sort of mutual understanding. Best wishes!
Rachel, phentermine.com
Hi, I have been on phentermine for 3 months. we all get dropped regularly at work because of the work we do. On random 5 panel tests and on ones sent to the lab, neither have come back positive for amphetamines, which is great! It also makes me wonder though after reading all these posts. I have lost 34lbs, which is even more awesome, but why is it not showing up, if others do? I take my pill every morning before I leave for work at 5am. What are your thoughts on this? Could I be getting fake pills from my doctor?
That is surprising. I’m wondering if it showed up because u took them for a while? I may have had 3 in my life. 2 over 90 days ago and one 28 days prior to my test. Guess I’ll find out when I return in 3 months.
I’m perscribed phentermine 37.5 mg daily & have taken as perscribed for approximately 3 months daily. As I lost my desired weight I started to taper the phentermine approximately once to twice a week for approximately 1-2 months. I’ve taken ABSOLUTELY NO phentermine for over a month (I actually believe 2 months. But not 100% sure). I took a pre-employment drug screen with a false positive amphetamine result! I now have to share my phentermine prescription with my potential new employer! Imagine my SURPRISE & EMBARRASSMENT! I wasn’t prepared for my explanation because I’d forgotten all about taking the medication (it had been so long). I really don’t understand why it showed up in the slightest.
I take phentermine I have for a long time this is the first time I tested positive for amphetamine. I take losartan metformin Gabapentin and Zantac when their doctor called to ask me about my prescriptions I told him which ones I had and he told me that none of those could test positive for amphetamine and my job is now on the line I have been suspended
I have a valid prescription for phentermine and am prepared to bring my medicine with me to the lab in the morning as proof. However, as I was reading the comments I saw alot of questions about taking 1/2 A day … I am on 2 daily – is there a level that is considered a “pass” or “fail” with a prescription? Or are they just concerned with ensuring you are taking them legally? I was thinking I wouldn’t have any delays or issues but I didn’t realize people took such varying amounts.
Hi Genny, thanks for your comment! We can’t speak to your company’s specific policies, but in general drug tests are given to determine the presence of illegal substances in your system. So, if you have a valid prescription you should be okay – regardless of your prescribed schedule/dosage. Often times people that take one pill per day are on a higher dose pill (e.g. 37.5mg), while those who take phentermine multiple times per day use lower dose pills. To learn more about different phentermine dosages/schedules, check out this page.
Rachel, phentermine.com
I took a phentermine Tuesday I took a random drug urine test today (Friday) I’m so worry if be coming positive?
Hi Mary. Although it can vary depending on the person, phentermine should not be detectable in the body after a period of around four to seven days, but will likely show-up if you take a drug test before that. So, be prepared to show proof of prescription in case there are signs of amphetamines in your system.
Rachel, phentermine.com
I had taken phentermine a week ago then off for a week, then I took one on Saturday, today is Sunday. I will have an upcoming drug screening for new employment this week. Should I worry about it showing up? I am prescribed by a doctor but I would rather not have my new employer know reguardless.
Hi Sarah! That’s very understandable. Although it can vary depending on the person, phentermine should not be detectable in the urine after a period of around four or seven days, but will likely show-up if you take a drug test before that. So depending when your drug screening is this week, the likelihood varies. Regardless, be prepared to show proof of prescription in case there are signs of amphetamines in your system.
Rachel, phentermine.com
What are the chances of getting a false positive reading after being off of Phentermine for 45 days?
Hi Alex, the chances are pretty low. Although it can vary depending on the person, phentermine should not be detectable in the urine after a period of around four or seven days
Rachel, phentermine.com
I took a phentermine to at 8 and had to take a UA today at 4 will it show up in my unrine
Hi Nana, yes – it’s possible it will. Be prepared to show your prescription just in case.
Rachel, phentermine.com
Thanks
I have taken 3 drug tests in the months I’ve been on Phentermine and all 3 have come up positive for amphetamines. I’ve never taken a “real” amphetamine in my life. There are many medications that can cause false positives for many different drugs (Tylonal, Benedryl, anti-depressiants, etc), but these false positives happen few and far between. From my experience, I’d say you can almost expect to come up positive for amphetamines on the initial urine test if you’ve taken Phentermine within the past few days, but I’ve never had it tested further with GC/MS.
I have taken a few drug test over the period of 2 years Both pre employment and random. 2 times I was on phentermine. Both times they never raised questions. In my opinion, if you take it as directed and have a prescription for it, you should be okay. Some companies have a list of prescription drugs that they ban from any employee using while at work. So weather or not you have a prescription they can legally terminate you as long as they have a contract or employee handbook signed by you stating you read and agree with all in the book. Some people choose not to read those and when it comes to being fired they claim they didn’t know. Hope this helps you out. If you have any concerns about what you can take while at work, simply ask for the list of drugs that banned from your company.
Hi, I only take 1/2 phentermine tablet (37.5) daily. A friend just informed me that this diet pill shows up as street drugs on a drug screen (hence what lead me to this site). I have a drug screen in 2 days for a very strict company and I don’t see even having a prescription being acceptable… my question is what is time frame to get this crap out of my body if i’m only taking 1/2 daily so I don’t look like a druggie??
thanks!
Hi Cristina,
Although it can vary depending on the person, phentermine should not be detectable in the urine after a period of around four or seven days
Rachel, phentermine.com
Hi I have never took this bed or to day and I only took 2 capsules As Told I was told I would do it drug test tomorrow or the next day what is the chances that it will show up this is not something that I’ve been taken every day I’m new to this
I had a severe anxiety/panic attack during work and was taken to the ER. I had a 10 panel tox/UA w/micro and it came back negative. When i got home, I took my wife’s last 2 phenties and went to bed. Boss called me 12 hours later for company UA. will it show up positive for amp/mamp? What do I do?
Hi!
Unfortunately, as phentermine is chemically similar to amphetamine, it may cause a positive result in urine screening tests for amphetamine.
I have a question today is my first day of ever using us I took two two tablets as described and was told that I have a urine test tomorrow I’m trying to find out since I’ve only took two and I don’t take it regularly and I’ve never took it before today how long will it take my system
If I took only one phentermine pill on Friday, and I have a urine screen the following Wednesday, how likely will it be out of my system? And if not, will I test positive for any substance? What about a false positive??
Hi Whitney,
Although it can vary depending on the person, phentermine should not be detectable in the urine after a period of around four or seven days. In 5 days it may still be in your system and could give a false positive reading for amphetamines on the urine test.
Sally, phentermine.com
Did your test come back positive? I’m in the same seat you were I took 2 pills on Saturday and 1 on Sunday, I was suppose to test today(Wednesday) but rescheduled it for tomorrow(Thursday) . Im worried it will still be in my system .
I just had to do an UA yesterday and not thinking that the medication would show up on the test. Well I didn’t pass and it has been sent to the MRO. I showed them my list of medications but I still now have to wait for the “phonecall”. I am PRAYING that I don’t lose my job over this!!! Any words of advice or wisdom would be appreciated right about now. I’ve never failed a wiz quiz… EVER! It was so embarrassing.
I have never had a positive urine only for what i am prescribed ,,but after taking Phentermine for 2 months after being prescribed ..my pain management doctor gives me a urine screen and it comes back positive for cocaine ,,i have never did anything other then what i am prescibed ..i have diabetes and kidney trouble also …i was released from pain management ..what can i do as i have had 14 surgeries and a really messed up back and i need my meds and the procedure i was getting on my back
Your stuck trying find another pain management.
But in meantime.
Talk to your family dr about staying on your meds until you find a new pain management .
Tell the truth to new dr.
Make sure you tell new dr.
Your willing to stop taking them
That you didnt realise the severity of it.
It happened to me.
Same thing.
I just found new dr.
And told him what happened.
That ive never had a positive urine for anything over the past 10 years.
I also was taking phentermine I am not drug user. I tested positive for coke now CPS has my chikdren someone please help!!!
I have been going to pain managements for years and i have never had a bad urine screen until i was prescribed Phentermine and i was told my last test was positive for cocaine ..when i questioned my pharmacist about it he said yes it is very possible to cause a false positive for cocaine since it is a stimulant ..but im not sure what to do about this ..any suggestions
I never took phentermine. Today i took a half a pill at 1:00p.m and i took a U.A. at 830pm..i drank alot of fluids today and urinated at least 10 times easily before the test..was there enough of it to show up
took 1/2 a phentermine pill today at 1:00 and didn’t think about the fact I was giving urine at 2:00 for my pain doctor. This was a 1 time thing haven’t taken it in many months. Doctor prescribed it a year ago.
Hello, i take qysmia and i failed a ua for amphetamines/mamp i took home test and got the same results some im just waiting on the lab has any body had this problem???? They say qysmia has phentermine in and its like amphetamines and will show up in a ua as amp/mamp…. please help..
I havent taken one in 5 months, just yesterday I took a half and come to find out I got the call for a job interview and a drug screen this morning is there a possibility that it will still show up on the drug screen?
Hi Joe,
Yes it’s very likely the phentermine you took yesterday will still be in your system.
Sally, phentermine.com
I took 1/2 a phentermine pill today at 1:00 and didn’t think about the fact I was giving urine at 2:00 for my pain doctor. This was a 1 time thing haven’t taken it in many months. Doctor prescribed it a year ago.
similar. I had a prescription a year ago and took 15mg x 2 days before my drug test . I’m worried. Did you have any issues ?
What if I took one pill it for one day (Monday) and I recently receive a phone to do a drug test on a friday for a new job offer!. The test its on friday…would it appear on the test? should I be worried. Thanks
Hi Yolanda,
Although it can vary depending on the person, phentermine may be detectable in the urine for a period of around four or seven days. So, you should be prepared to show your prescription for proof in case there are signs of what appears to be amphetamines in your system.
Sally, phentermine.com
I took about 8 Phentermine pills (30mg) over a two month period. I took it yesterday and drug tested myself with the 5 panel urine test. I was shocked to see I was positive for amphetamines. With some quick research I found out that Phentermine can lead to false positives.
My question is, will this be detectable in my hair? I would have never taken this if I had known it was a controlled substance.
I have a hair test January 23rd. Do you think I could test positive for this?
Hi Hopeful,
We’re not completely informed about hair testing and phentermine, but we do know that hair testing is preferred in many cases of drug-testing as it shows drug use over the previous month or longer, while urine testing is limited to just a few days. However, as the article states, phentermine is not an amphetamine, it is a controlled substance in the same way that many prescription medications are. So as long as you have a prescription to show why phentermine is in your system then you have a reasonable explanation to show why you might test positive later this month.
Sally, phentermine.com
hopeful
did you pass hair test?
Our drug testing vendor does a 3-level test on amphetamines.
The initial test is an immunoassay, showing the presence of amphetamines generally.
The next test is GC/MS breaking it out between amphetamines and methamphetamines.
The third test breaks out the meth into d-form and l-form isomers, with a percentage of each.
Is it possible for Adipex to test 96% d-meth? Please explain.
Hi Julie,
We’re not sure about the exact statistics, we just know that phentermine is structurally similar to amphetamine. Perhaps it could be as similar as 96% but then that would indicate that the other 4% makes a lot more difference than might be suggested by the low number.
Sally, phentermine.com
I tested positive negative and had been taking phentermine but they called and said it showed methamphetamine molecules, I dont understand.. I’ve used in the past but its been years
Hi,
Since phentermine is structurally similar to amphetamine, the tests can incorrectly identify phentermine as methamphetamine. If they’ve analyzed the results and found methamphetamine then this is strange, especially as you say it’s been years since you used. If I were you I would request that the MRO analyzes the test again if it’s possible for you to do so.
Sally, phentermine.com
It CAN cause a false positive on a standard “dip” test if you take it often, but then it usually goes to a lab for the final determination of what it is, and phentermine isn\t something they specifically look for. So all should be well.
What if i took it one time 48hrs before a 5 panel?
Hi Meeuh! Although it can vary depending on the person, phentermine should not be detectable in the urine after a period of around four or seven days, but will likely show-up if you take a drug test before that. Regardless, be prepared to show proof of prescription in case there are signs of amphetamines in your system.
Rachel, phentermine.com
I tested positive for amphetamine gave all 3 prescriptions but medical review said it wasn’t this amphetamine in my urine which I didn’t understand due to that was all I was taking. Sadly to say I got termed.
I’d recommend suing your previous employer if your story is true. This is a medication used to treat a real medical issue. You have as much of a case as a diabetic whose insulin caused them to come up with a false positive for amphetamines. The GC/MS test will put an end to what was really in your system and it should have been ran.
I just went through same situation, except, I have been with my employer, a year. I take phentermine 37.5 and for awhile now, I took the test and tested positive for amphetamines and the MRO decided that is was in no way my phentermine and I have NOT taken anything else! I am beyond pissed and have no idea what and where too go next
I’m sorry about that and I didn’t see this sooner I had the same issue but it was for pre employment. Everything went well for me and I hope it did for you as well.
I did receive a positive result on a drug test and showed my prescription to the nurse at work but they still sent me home and I have to wait for the lab result – I had no idea I would fail a drug test with diet pills. I don’t know what is going to happen, they said someone is going to call me, I think to ask me about my prescription, I just don’t want to lose my job.
It is good to get a note from your doctor stain he or she has prescribed Phentermine for you.The reason is not required because weight loss is only one.This should be sufficient the amount prescribed is between you an your physcian.
Other uses although not FDA recognized is for adults with ADHD.esp.if Adderall is ineffective or its side effects are pronounced hyperanxiety and excessive symptoms ,a person may be too sensitive for metabolic or endocrine reasons.
Phentermine is also used to stop smoking .For me a note from my physcian stain I was on Phentermine and if the employer had questions or concerns to please address with the physcian. This is a reminder that employers have a responsibility to the employee and must honor hippa.,confidentiality.Verification u r on it by ur doctor should be more than enough .