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Why do drug test give false positives sometimes?

Updated: 8/17/2019
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11y ago

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that is something to ask your parents after they give you the drug talk my dear child.

Because there may be other medications you have taken that can show a false positive. It depends on what you have tested positive for?

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11y ago
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Q: Why do drug test give false positives sometimes?
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Will any medicine show a false positive on a drug test?

Yes. But it won't save you, because there are more specific tests they can give that do not show false positives.


My drug test showed up as anphetamines could it be zantac?

Yes. It said that online. " Ranitidine is also known to give false positives for methamphetamine on drug tests.]"


How can diazepam show up on urine drug screen when you don't take it?

Drugs tests are not 100% accurate and can give false positives and false negatives for various reasons. To prove that you have not taken diazepam, ask to take an alternative form of test.


What will give false positives for Xanax?

I take Xanax sporadically for anxiety. I have a n interview coming up and a pre employment drug screen.; how long on averge does It take to get it out of your urine an blood stream? Much obliged


What will give you a false reading for a drug test?

sineoff


What drugs will cause false positives on a drug screen?

if its in your system theirs no false positive. Actually several drugs can cause false positives in different categories on a standard drug test...such as any ephedrine containing product can show up as a positive for meth, so if you have been using weight loss/energy pills containing ephedrine or perhaps an asthma drug containing ephedrine you may show positive for meth on your drug test. Basically, just be up front and tell the tester all of the OTC and prescription drugs you are taking and they will do further testing if necessary to rule out any street drug/illicit use.


If you are taking methadone why would you fail a drug test for it?

Basics drug tests (5 panel ) don't test for it. Methadone its detectable by a expanded test which includes a few additional drug (12 panel for example).


What drug test is the weakest?

The dip stick tests are the weakest--they're designed not to give false negatives (saying you don't smoke when you really do) but they give a LOT of false positives (saying you smoke when you don't). People take advantage of this--they'll say they take a lot of ibuprofen and eat poppyseed rolls when they're really smoking weed and eating opium.


Drug testing results?

Can trazadone give a false positive urine drug screen for methamphetamine


Is a heat sensory better than a motion snesor?

Heat sensors are good but can give false positives if there is a sudden change in ambient temperature.


Legal over-the-counter medications that can cause you to fail drug test?

People don't realize there are a lot of things that can give a false positive on a drug test. Ibuprofen can give a false positive for cannabis.Cold remedys can give a false positive for amphetamines,and decongestants ,like pertussive can give a false positive for opiates .Some of the newer antibiotics can give a false positive for cocaine! Valium can give a false positive for PCP. There are foods you eat which too can give false positives on drug tests. The most common one being poppy seeds which can give a false positive for opiates.


Why diabetes cause false positives for marijuana?

Could be one of the medications (like insulin) that they take, or just the disease internally itself. Its possible as kidney disease/infection can cause a false positive for amphetamines.The 1st post under the OP by sublime1-ga has a list of chemicals and things known to give false positives (thc and amphetamines included)