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Doctor insights on: Does Xenical Give A False Positive Drug Test

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Does xenical give a false positive drug test?

Does xenical give a false positive drug test?

No: I know of no research that shows xenical can cause a false-positive drug test. All xenical does is block some of the fat from your diet from being absorbed, thus decreasing your calorie intake. This shouldn't cause either a urine or a blood drug test to become positive. ...Read more

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Dr. Alan Wartenberg
572 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


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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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Can diabetes give a false positive for cocaine in a urine drug test or would it cancel the test?

Can diabetes give a false positive for cocaine in a urine drug test or would it cancel the test?

Myths: No. Not in any way would having diabetes cause a false positive or negative on a drug screening process for cocaine. ...Read more

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Would azithromycin give a false positive for cocaine on a urine drug test?

Not a problem: Generally members of the penicillin family of antibiotics and especially Amoxicillin may falsely produce a urine drug test positive for cocaine. Azithromycin is in a different antibiotic structural class and is not known to produce this false positive result. ...Read more

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Will belviq (lorcaserin) give you a false positive on a drug test?

Will belviq (lorcaserin) give you a false positive on a drug test?

No: You are safe in that regard, but depending on whether it is a urine test or blood test it can detect your prescription medications, if that is ordered along with the drug screen. ...Read more

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Will flexeril (cyclobenzaprine hcl) give you a false positive on a drug test? I have recently been prescribed flexeril (cyclobenzaprine hcl) and took a drug test and i failed it. I do not do drugs and it showed up as THC why is this

Will flexeril (cyclobenzaprine hcl) give you a false positive on a drug test? I have recently been prescribed flexeril (cyclobenzaprine hcl) and took a drug test and i failed it. I do not do drugs and it showed up as THC why is this

Not likely: Most drug tests use a first test, TLC or thin layer chromatography, as an initial screen. This test is prone to cross-reaction or "false positive" results for some substances. Usually if the TLC is positive, a second test, gcms or gas chromatography mass spectroscopy is used to confirm. This test is much more specific for specific molecules and not likely to yield false positive results. ...Read more

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Can pseudoephedrine sulfate result in a false positive drug test?

Pseudoephedrine: Yes, to stimulants such as meth, & also to ecstacy. ...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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Can you suggest foods that trigger 'false positive' drug test results?

Can you suggest foods that trigger 'false positive' drug test results?

As far as I know,: the only food that can cause positive results in urine (and other) drug testing is poppy seeds. This is actually not a false positive, because poppy seeds do contain very tiny amounts of a chemical related to morphine, papaverine, which is metabolized into morphine. I am not aware of any other food that can do this. They are found in pastries, bagels and other baked goods. ...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 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