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Doctor insights on: What Does Fentanyl Show Up As On A Drug Test

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Dr. Alan Wartenberg
542 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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What would cause a false negative urine drug test for fentanyl patches?

What would cause a false negative urine drug test for fentanyl patches?

Errors: 1. Not wearing the patch, an exhausted patch, a placebo patch 2. The test was not specific for fentanyl 3. Lab error 4. Specimen misidentification. ...Read more

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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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What type of drug test can i have done on my daughter to check for fentanyl hereing shes using fentanyl patch and cuttin peices an putting under tonge?

Urine drug screen: A typical urine drug screen will pick up fentanyl as an opiate. I am sure the ones you buy over the counter at CVS test for opiates. Good luck in helping your daughter! ...Read more

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Can someone taking morphine sulfate test positive for fentanyl in a saliva drug test , although they have never taken fentanyl ever?

Yes,: Both drugs in the same class (opioids) so they will both show up the same. Fentanyl is a synthetic opioid and much stronger than morphine. When testing for Morphine, it will show positive for morphine metabolites or fentanyl. Take care. ...Read more

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Well nyquil show u on a drug test ?

Well nyquil show u on a drug test ?

Nyquil: No, but it can give false positive results for amphetamines, heroin, opiates, Methadone or ecstacy. ...Read more

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Could lidocaine show on a drug test?

No: Some people think because it has "caine" in it that it could show up as cocaine, but it is a completely different chemical with no overlap with any drugs of abuse. Test kits do not test for it, and confirmatory tests like gas chromatography/mass spectroscopy will determine exactly what it is if there is any question on the screening tests. ...Read more

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Does clonidine show up on a drug test?

Does  clonidine show up  on a  drug test?

Generally not: Clonidine is not a controlled substance and is generally not tested for on a routine drug screen. A similar sounding medication called Klonopin, (clonazepam) however, is a controlled substance (benzodiazepine) whose class of medication is part of a routine drug screen. ...Read more

Dr. David Sherer
213 doctors shared insights

Sublimaze (Definition)

Sublimaze is a drug that increases narcotic effects which is a ...Read more


Dr. David Sherer
221 doctors shared insights

Duragesic (Definition)

Duragesic is a drug that increases narcotic effects which is a ...Read more