Doctor insights on:
Diphenhydramine Drug Test
I took two 50mg tablets of Diphenhydramine 17 hours before I had to take a pre-employment oral drug test. Is there a chance I might fail the drug test?
Unlikely: This would not be screened or confused with illegal drugs. However people often get drowsy from this relatively high dose. If you were to fail the test, it would be based on your performance and not the drug itself. ...Read more
No: It shouldn't show up in a home screening test. ...Read more
Is there a home drug test to test for diphenhydramine o.t.c. abuse? I suspect my husband is abusing it
There's info here: https://en. Wikipedia. Org/wiki/Diphenhydramine
But, I'm concerned too about your relationship. Suspicion is often as harmful as the behavior in question. Consider Couple's Therapy after a few prep sessions for you alone to learn how to communicate concern w/o blame. A test would do nothing to help resolve any problem. Best wishes 2U2. ...Read more
I need allergys meds need a negative drug test my allergies are killing me can I take Benadryl (diphenhydramine) or zrtek?
I took one tylonal pm the has 25mg of benadryl (diphenhydramine) in it. I have a pre employment drug test in 12 hrs what's the chance of a false positive for pcp.
False + UDS: Chances are very slim to none.Get a more detailed answer ›
I took drug test today and it was positive for tca, I regularly take an OTC sleep aid with diphenhydramine. Couldn't have caused the false positive?
"tca"????: Did you mean THC (marijuana or cannabis)? TCA medically usually means tricyclic antidepressant, and these are actually chemically similar to benadryl (diphenhydramine). If all that was done was a SCREENING test, there are lots of potential false positives, and if used for legal purposes, all screening tests should be confirmed with a more sophisticated test, usually gas chromatography/mass spectroscopy. ...Read more
I'm on drug court and I want to take a sleep aid because I can't sleep I have a generic sleep aid but it has diphenhydramine hci in it will this make me test positive for anything or will it be ok to take it
The answer dr. Johnson provided is correct. There are reports that with very high doses, Diphenhydramine has in rare cases, led to false positive drug screening for benzodiazapines. However, if this were to occur, normally the sample would be retested using a more precise test and that would clear up the confusion. It is reported that it could also trigger a false positive for pcp (but this is also very rare).
Diphenhydramine is not a good choice for chronic problems with sleep. If you are in a program that requires drug testing, you might consider skipping the Diphenhydramine and working on sleep hygiene first. ...Read more
NonDept of Transport: A DOT drug test is a drug test the Department of Transportation (DOT) requires for businesses in the business of transportation. Businesses not regulated by the DOT can pick and choose which substances they check for (a non-DOT drug test). ...Read more
"must take? ": Outside of criminal justice issues (people on probation or parole), there aren't any times where you must take the test. Some employers require drug testing before hiring, or while employed either on a random basis or if there are work-related problems, but you have the choice of working there or not. Drug testing is sometimes done in schools as well, or for child protective services etc. ...Read more
Yes: Poppy seeds contain minute traces of opiates. Both opium and Codeine occur in poppy seeds, albeit in tiny quantities. The sensitivity of drug tests (parts per billion) is such that you can indeed fail a drug test after eating a poppy seed bagel. Apparently the minuscule amounts of opiates in poppy seeds can persist in the blood for about 48 hours. ...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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