i have never used cocaine but it showed up in a recent drug test
I copied this excerpt from an article I recently read.
"Laboratory slip-ups are to blame for many of the mistaken test results. But even perfect labs running perfect tests will also find many false positives.
* Nasal decongestants such as Dristan, Neosynephren, V
icks Nasal Spray, and Sudafed, which cause false positives for amphetamines.
* Poppy seeds like those on a dinner roll, which cause false positives for opiates. Even the highest-quality test currently available, the GCMS test, still confuses poppy seeds with heroin.
* Pain relievers such as Advil, Nuprin, Midol, Trendar, or any medicine containing Ibuprofin cause false positives for marijuana.
* Antibiotics such as amoxicillin or ampicillin cause false positives for cocaine.
The above list is only a beginning. Most substances which people have in their blood have never been tested to see if they cause false positives. Indeed, even some natural body enzymes cause false positives. According to research validated by the Congressional Office of Technology Assessment, melanin, the natural pigment which makes skin dark, can cause false positives for marijuana."
I would recommend you request to be re-tested.
In addition to the currently listed substances that can cause a false positive for cocaine, I would like to add that the prescription drug Nuvigil (armodafinil) caused a false positive for both cocaine, amphetamines and possibly PCP. I currently take Nuvigil, Suboxone, Valium, and cannabis. I was hospitalized for a ruptured appendix, when they did a toxicology test, it showed I tested positive for cocaine, amphetamines, methamphetamine, PCP, and many others (the others were explainable from my other medications such as opiates and benzos).
I already knew Nuvigil causes a false positive for amphetamines, but we were complexed as to why it showed cocaine and PCP. I honestly haven't used any of those drugs since I was a teenager, I am now 37. The hospital's inaccurate toxicology report tested me positive for cocaine, amphetamine, methamphetamine, PCP, heroin, THC, benzos, barbiturates, and TCA (everything on its list except for methadone and oxycodone). The doctors did not believe me and treated me as a drug addict seeking more drugs, I was guilty until proven innocent by having a more accurate drug test done by a lab that showed they were all false positives.
My prescribing doctor and I are still confused as to why their drug test showed those false positives when other more accurate drug tests did not and could differentiate between Nuvigil and amphetamines, Suboxone and heroin, etc.
Hope this helps someone out there using one of these medications and is confused as to why they're testing positive for cocaine or anything else.
I'm a Licensed Clinical Therapist working at a drug and alcohol clinic in Hagerstown, MD. I spoke with a laboratory technician at Redwood labs regarding possible causes of false positives for cocaine. She said that information suggesting that antibiotics such as amoxicillin or ampicillin causing a false positive is 30 years old and out of date. According to Redwood Labs, there are no current over the counter or prescription medications that will cause a false positive for cocaine.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 23 Nov 2010 • 4 answers
Posted 26 Feb 2011 • 3 answers
Posted 24 Dec 2011 • 2 answers
Posted 9 Jan 2012 • 1 answer
Posted 17 Feb 2017 • 3 answers