https://www.sciencedirect.com/topics/neuroscience/benzoylecgonine

The results of urine tests of all 12 patients were positive for cocaine 24 h after .... does not produce false negative test results with cocaine immunoassays, but it ...

https://www.drugs.com/article/false-positive-drug-tests.html

May 26, 2016 ... If benzoylecgonine, the main metabolite of cocaine is detected, the subject cannot claim that the result is a false positive due to Novocaine ...

https://www.mlo-online.com/home/article/13003406/falsepositive-doa-testing-results-due-to-prescription-medications

Oct 1, 2009 ... Many over-the-counter, or OTC, medicines containing pseudoephedrine, ephedrine, or other sympathomimetic amines interfere with screening ...

https://academic.oup.com/painmedicine/article/16/6/1073/2460555

Jun 22, 2015 ... The Clinical Impact of a False-Positive Urine Cocaine Screening Result ... that both cocaine and its primary metabolite benzoylecgonine were ...

https://www.ncbi.nlm.nih.gov/pubmed/24138673

Oct 18, 2013 ... The clinical impact of a false-positive urine cocaine screening result on a ... that both cocaine and its primary metabolite benzoylecgonine were ...

https://www.ncbi.nlm.nih.gov/pubmed/18430300

Failure of amoxicillin to produce false-positive urine screens for cocaine ... specimens were negative for the cocaine metabolite, benzoylecgonine (BE), by all ...

https://goaskalice.columbia.edu/answered-questions/tested-positive-cocaine-never-touched-stuff

Apr 24, 2015 ... Most drug tests that check for cocaine look for benzoylecgonine, a product of ... this byproduct and so can't cause a false positive for cocaine.

https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=167&contentid=cocaine_screen

The two most important metabolites of cocaine are benzoylecgonine ... to get a false negative, meaning a negative result when the result should be positive ...

https://onlinelibrary.wiley.com/doi/full/10.1002/dta.2153

Dec 26, 2016 ... There were 4252 benzoylecgonine positives above 5 ng/mL. ... called negative by using the 100 ng/mL cut‐off, for a 51.9% false negative rate.

https://deserthopetreatment.com/cocaine-abuse/stay-in-system/

Apr 15, 2019 ... If a person has been using cocaine heavily, benzoylecgonine may take ... or other consumables can result in a false positive on a cocaine test.