AboutDr Alan Galbraith Expertise I can answer most questions on most drugs. Answers can be given in either technical or layperson terminology. My main areas of interest are psychiatric, gastrointestinal and cardiovascular drugs.
Experience I have been a university lecturer/head of department for almost thirty years, but am now retired. My research interests were alcohol, smoking and cardiovascular disease.
Organizations Institute of Biology, London.
Publications Author of "Fundamentals of Pharmacology" 5th Edition published in November 2007 by Pearson Education, Australia.
Question I had a false positive for benzos on a urine drug test. I take esgic plus (generic form) which contains butalbital, caffeine and acetaminophen. I also take a tylenol pm to help me sleep. Would this cause the false positive for the benzos. Please help!!
Answer Dear Sandy
None of these drugs should cause a false positive for benzos but thay may be interested in the butobarbital.
False positives (as are false negatives) are relatively common as many laboratories in the US (where testing has become big business) use poor analytical techniques and are after making easy money. All experts in this field on this site get frequent similar questions.
I would ask for a retest at a different laboratory.
