One MD told me it can test positive for cocaine and another MD said it can not. Does anyone know for sure? The drug test I am asking about is a urine test. Any help would be greatly appreciated.
Can Lidocaine (patch) Cause A False Positive For Cocaine On A Drug Test?
Question posted by Ilovemusic on 23 Nov 2010
Last updated on 18 January 2019
5 Answers
Rayvon Steven
10 July 2017
I take all type of medicines and they didn't ask tribenzor, gapapentin ,coreg , aspirin ,pantoprazole , escitalopram , amoxicillin , metformin tizanidine allopurinol tramodol goes on and patch and now they talking about taking our kids
Rcazz777
19 Aug 2017
Hello Ravon, I'm not sure why they would say they are going to take your children because you are on a lot of meds. I took custody of my niece and am on around 20 meds a day and it wasn't an issue. The only thing that I had to do was have my pain medication counted if they wanted to see them to ensure that I wasn't abusing them or anything. I would suggest you telling your worker that they are welcomed to see your meds and count them too. When children's services gets into your life, you usually have to jump through hoops to keep your own children. I am praying that everything works out for you and I hope this helps. Have a blessed day!
Rcazz777
19 Aug 2017
I meant Rayvon Steven.. I can't stand auto correct...
Monosgprincess
18 Jan 2019
Always have a caregivers affidavit and a power of attorney signed and notarized by someone you trust and they can never take your kids no matter what you do, they hate it too
aprilr78
6 June 2012
so i injected lidocaine before getting a tattoo, could this explain why I tested positive for cocaine?
Roben83
15 Oct 2018
Injected?
racecar5150
22 April 2012
i am a health care proffessional, i have only seen positives for Ingested lidocaine,depending on the intestinal system it can take up to 45 days to expel from the body.
christineATU
24 Nov 2010
As Marjorie indicated, lidocaine should not cause a positive for cocaine in a UA. False positives are so common, they should develop a more accurate, cost efficient system so people do not lose their jobs, denied new jobs, have probation revoked, lose a custody case, and end up with a bad reputation as a drug abuser. I found this excerpt from an article I thought you might find interesting. Also, some of the chemicals used in the test kits have a short shelf life and can also cause false positives. But the number one reason for inaccurate results is poor quality controls in these labs. That's why it's so important to tell the tester everything you have taken within the past 30 days. Regardless of whether it was prescribed or not.
"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.
False positives are caused by:
*Nasal decongestants such as Dristan, Neosynephren, Vicks 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 ibuprofen 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"
marjorie zych
23 Nov 2010
According to my PDR there should not be a positive test for cocaine from using the Lidocaine Patch, it mentions only CPK alterations to testing. Hope this helps, marjorie zych
gman1
4 Nov 2017
I'm asking about Lidocaine 2.5% and Prilocaine 2.5% cream
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Further information
- Lidocaine uses and safety info
- Lidocaine prescribing info & package insert (for Health Professionals)
- Side effects of Lidocaine (detailed)
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