I totally agree with Laura & Karen. You need to tell your prspective emplyer that you know they do a drug test screening & that you do occasionly take aprescribed xanax, & you know it will show. I have seen and read your answer to the previous question about receiving a false negative Xanax test. I, too, tested negative for Xanax even after taking 0.25mg 4-5 hours earlier on the day of testing. It’s possible to have a positive pregnancy test even if you aren’t technically pregnant. This is called a false positive. It’s sometimes caused by a chemical pregnancy. Although the 10-panel drug test is less common than it’s 5-panel counterpart, many employers use it. Here’s what you should expect. If you are scheduled for a job interview and are going to be subject to employee drug testing, there are plenty of reasons to be worried. Know the difference between 5 panel, 10 panel, and 15 panel drug tests. Is testing positive for pot enough to disqualify an injured employee from receiving workers’ comp benefits? Vincent Hogg worked at the Oklahoma County Juvenile Detention Center. False Positive Drug Test Facts. A False Positive Drug Test Should Worry Anyone Undergoing A Drug Test. A false positive drug test can happen with the urine, hair, saliva or blood test, but it is far more likely with the urine drug test. Hi and welcome to the site. My name is***** hope I can provide helpful medical information for you today. Trazodone will not show up as a false positive on a drug screen for benzodiazepams. Some foods can cause a false positive on a breathalyzer. Could you be arrested and charged with DUI because of a defective breathalyzer? Learn the facts. I recently took a drug test. I am prescribed & regularly take Xanax. It was a dip stick test and is said I was positive for meth or amphetamines.