Doctor insights on: What does fentanyl show up as in drug test
Why would hydrocodone show up in a urine drug test when u only take oxycodone and use fentanyl patches?
Because u r alive!: Those drugs are all opiods and the body has metabolic pathways that intraconvert one drug into another. That's biochemistry for you. You can look up the pathways in Goodman & Gilman if you want to. Great book on pharmacology. ...Read more
What type of drug test can I have done on my daughter to check for fentanyl hereing she's using fentanyl patch and cuttin peices an putting under tonge?
Can someone taking morphine sulfate test positive for fentanyl in a saliva drug test, although they have never taken fentanyl ever?
I take Morphine sulfate 200mg 3x a day. Had a routine saliva drug test. Tested positive for fentanyl. Is this possible? Never had fentanyl ever?
Repeat lab test: Next step would be for lab to repeat test and check quality control results. ...Read more
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
Occasionally: Metaxalone is not a drug of abuse, so most labs won't te st for it. Unless someone asks. Most urine tox screens are 2-part: a dipstick immediately to get a rough idea of what you've been taking, and a lab confirmation run on sensitive instruments to break down what the exact meds are in you, and in what concentration ...Read more
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