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Doctor insights on: Does Xanax Cause A False Positive On Drug Test

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Can xanax(alprazolam) cause a positive drug test for serax (oxazepam)?

Can xanax(alprazolam) cause a positive drug test for serax (oxazepam)?

No: Oxazepam is a metabolite of Valium but not xanax (alprazolam). It is a drug prescribed itself. Like Nexium (esomeprazole) is a metabolite of Prilosec (omeprazole). ...Read more

Dr. Alan Ali
937 doctors shared insights

Alprazolam (Definition)

Alprazolam is a short acting benzodiazepine, it does not last long in the system . So when used regularly with multiple doses to treat anxiety, it is associated with inter-dose withdrawal, tolerance and a resulting increase level of baseline anxiety. So in anxiety clinics, we use it only in cases of " flight , dentist or other infrequent anxieties, ...Read more


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If i took 0.5mg of Xanax (alprazolam) 24hrs before a pre-employment drug test will it show up as positive I am a male 49 years old 6ft2in tall 210lbs and have not used Xanax (alprazolam) before

It may: Depending on what test they use. Xanax (alprazolam) and Klonopin are not metabolized into the usual molecule that drug screening kits are looking for (at least not in large amounts) - oxazepam. There are kits that look for it. If you have a prescription for xanax, (alprazolam) that is an iron clad defense unless it is a safety=sensitive job. If it was not prescribed, you are misusing (if not abusing) the drug. ...Read more

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Took 0.5mg Xanax (alprazolam) on the 26th (prescribed) drug test for new job on the 3rd, will it test positve? Also stopped klonopin 2 months ago with that be + ?

Took 0.5mg Xanax (alprazolam) on the 26th (prescribed) drug test for new job on the 3rd, will it test positve? Also stopped klonopin 2 months ago with that be + ?

Xanax (alprazolam): Possible for xanax (alprazolam), (alprazolam) not klonopin, if testing for benzos. However, if u have documentation of xanax (alprazolam) being prescribed by a physician then u should be ok. ...Read more

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Can xenical cause a false positive drug test?

Can xenical cause a false positive drug test?

Unlikely: Given xenical's mechanism of action - blocking absorption of fat, it is unlikely that the drug itself would be highly absorbed and mimic any substances tested in a drub test. ...Read more

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I took metformin 500 mg and I was wondering how long after stopping that it was out of your system and could it cause a false positive drug test?

I took metformin 500 mg and I was wondering how long after stopping that it was out of your system and could it cause a false positive drug test?

Metformin 500: Metformin 500 is usually taken twice a day - out of your system every 12 hours. I don't think it can cause a faulse positive test if you are monitoring your blood sugar. If you think the metformin associated blood glucose values are too high or too low please contact your doctor. ...Read more

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Will unisom cause a false positive on a drug test!?

No: It would be very unusual to have a false positive on a urine drug screen with unisom. In the rare chance this did happen, the confirmatory test would come back negative. ...Read more

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I need to know what will cause a false positive on a hair drug test i don't use illegal drugs but im on a lot of mediciations ?

Depends on the drugs: This will be connected to the drugs being looked for in the hair and what you are taking. Obviously narcotics will show up if taking over long periods of time. ...Read more

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Can amoxicillin cause a false positive for cocain on a drug test?

Can amoxicillin cause a false positive for cocain on a drug test?

No Proof: The only medical trial to test this was done in on 33 Amoxicilin pts in 2008 and no false positives were found: http://jat.oxfordjournals.org/content/32/4/315.full.pdf Contrast this with the thousands who claim this to be true on the net and we have a dilemma. Perhaps a Lexisnexis legal search for case law is more meaningful as legal perception is reality. ...Read more

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Can vitamin B2 cause a false positive on a drug test?

Can vitamin B2 cause a false positive on a drug test?

No: I thought this was a strange question, but in researching it found out that this is claimed on some websites. However, I am quite certain that b2 does not cause a false positive on drug tests. It can make your urine bright yellow & some who drink a lot of fluids to dilute their urine before a test will sometimes take b2 so the urine looks yellow rather than clear. Will not cause false positive. ...Read more

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Does gabapentin cause a false positive on a urine drug test?

Does gabapentin cause a false positive on a urine drug test?

Not Likely: It is unlikely that Neurontin (Gabapentin) will trigger a false positive urine test for drugs. However, if you are taking other medications then these medication may alone or in combination with Neurontin trigger a positive urine screen. Also, poppy seeds and other foods, fermented or otherwise may result in positive screen. Here's a reference: http://dig.pharm.uic.edu/faq/2011/Feb/faq1.aspx ...Read more

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Is there anything that could cause a false positive drug test for fentanyl?

Is there anything that  could cause a false positive drug test for fentanyl?

No: Conventional urine drug screens (uds) look for metabolites from naturally occurring opioids (like morphine and codeine), but fentanyl is a synthetic opioid which is metabolized to different products. These products are not picked up by uds. ...Read more

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Will drinking Chia seeds in my protein shakes cause a false positive on a drug test?

Will drinking Chia seeds in my protein shakes cause a false positive on a drug test?

Highly doubt it: Chia seeds are very healthy (see https://www.nlm.nih.gov/medlineplus/ency/patientinstructions/000727.htm) Searching online I saw one report of someone claiming chia seeds caused then to test positive for opiates, and saw that a colleague here states chia can cause positive tests- but she didn't give a reference. I see no other evidence or reason why chia seeds should cause a false positive test. ...Read more

Dr. Alan Wartenberg
574 doctors shared insights

Drug Testing (Definition)

It is the process of examining body fluids or tissue for evidence of chemicals taken or not taken. It does not diagnose addiction however this a ...Read more


Xanax (Definition)

Alprazolam is a short-acting benzodiazepine which is a kind of sleep-inducing drug ...Read more