Feedback on False Positives from Drug Testing, page 45

False Positives Forum

This forum is intended to help those who Do NOT Abuse Drugs. We do NOT support the illegal use of any substance. If you have experience with false positives, share your experience. What would you tell someone about drug testing and false positives? Please remember that we do not give medical or legal advice.

Subj: Problem with methadone
Date: 9/19/2008
This last part of 2007 started getting sick. I had this really weird, like chemical burn to my throat (NOT HEART BURN) and somedays I was so wired, like I had taken some diet pills, and other days like I had taken a muscle relaxer. I thought I was losing my mind a little, I take one drug methadone, for peripheral nueropathy. I finally connected it to my methadone, when I told my dr. he said I must have gotten a” bad batch” switched me to morhpine, I got the bright idea I would test my own urine and it came up positive for benzo, ppx, and amphetamines! I still had some of my old methadone left. When I would take it, it did NOT affect me like the new refill did. Before I was able to get to my DR. I cut down as far as I could but still had to take a little to keep from going into withdrawls (I do Arizona in the winter my Dr, is in Washington).

One nite I took one from the new refill and about 20 mins after, I got this really painful burnining in my throat, my legs, thighs and calves, felt like someone was twising them, very painful and shooting pain in my stomache, about 2 mins after that all of a sudden I started convulsing (jackknifing, they called it) called 911, they took me to the hospital, gave me a shot for the pain in my legs, and didnt know what to say about the rest of the symptoms, asked me if I had been using any thing for killing rodents, or plants, I said no and they sent me home. There is something really wrong with this batch of 10 mg methadone tabs, I tried dropping a few mixed in water into a drug testing kit and it came up postive for benzos ppx and buprenoraphine too. I have done this a few time, same thing. So then I orderd some forensic substance testing kits, the kind the police use, and they tested positive for ephdrine AND phenobarbital, those particular kits don test for benzo. I didnt even know what a benzo was until all this started happening.

I know you will think I am NUTS, but with all these methadone related deaths, has anyone thought to test the methadone? I doubt it, they probably just shrug their shoulders and go, ops there goes another one, just another methadone overdose. I know you hear all sorts of goofy stories, and this sounds like one I know, but I am serious, I think something is off with that batch of methadone. It even looks a little bit different, the numbers and all that match, the same maker, but they are just a little bit smaller, and little darker in color. And the shape and length of the numbers are just a little bit off. Can you please help me find a lab where I might get this tested, my doctor, just say ‘dont take it”, but it made me so sick, I just cant seem to let it go. Is there someplace I can have these sent to have them tested, the lab that makes these, also produces diazepam AND ephedrine products.

I first thought I had developed a sensativity to the methadone, but like I said when I would take some of my previose prescription, it wouldnt happen, its not just in my head, this was a scary physical reaction, and it happens almost every time! I know I will have to pay alot for this test but I am willing to do it. Please please tell me where I can take them with out having to get my doc, or attorny involved, my doctor is the one that said you must have gotten a bad batch, and let it go at that, what does that mean ‘bad batch’?

It has been about 7 months since I had taken one of these pills, last Sunday I tested it again… same thing, same burning in my throat, same tight muscles in my legs, and RACING heart, could NOT sleep. I have spoken to a few other people that have been getting wired off of their methadone too, they arent getting the benzo symptoms, but most of them take zanax, already. Ok enough, Ill stop, I sound like a kook, but I’m not, but if I cant figure this out I will be. Thank you for your time.


AskDocWeb: You might try contacting your local pharmacist or hospital for a referral but be aware that they usually do drug analysis only for physicians.

Subj: Xanax?
Date: 9/20/2008
Is there anything over-the-counter that could make you test positive for xanax? Any info on this would be greatly appreciated.


AskDocWeb: There are no over-the-counter products (that we know of) that could cause a positive for Xanax.

Subj: Will this show up?
Date: 9/21/2008
I was at work and a bottle of dog itch relife cracked and got on my hands and I always chew my fingernail, well my mouth got numb and I thaught I got poisoned so I looked at the itch and on the label it said lidocain will this show up as a drug in any normal drug test?


AskDocWeb: There have not been any reports of that happening, so far.

Subj: Oxycontin?
Date: 9/21/2008
I am very interested in getting information on what could cause a false/positive UA for Oxycontin? I have never taken those pills and I have taken 3 seperate over-the-counter tests and one of them is now showing I am positive for Oxycontin? I report to probabtion on Monday, September 22, 2008 and I am sure that is too little time to receive a response back from you. Regardless, I would like a reply to my email at your earliest convenience.. Thank you very much. Sincerely,


AskDocWeb: Oxycontin, hydrocodone, and codeine show up as an opiate in a drug test.

Subj: Nobody wants to believe an addict
Date: 9/22/2008
I need help desparetly. I am on a methadone clinic for opiates. I am now testing positive for benzos. This clinic doesn’t allow them. It is like starting over again. I was getting take home doses, until urine test showed benzos. I have asked them to do any drug test they want because I’m clean. Of course nobody wants to believe an addict is telling the truth. They did a surprise urine test on a Tuesday for the whole clinic. By Friday morning they had taken away my priveleges. I have asked for a confirmation(2 weeks ago). This is to find out which benzo I took. So anyway I am trying to fight this. I take sertraline(generic zoloft), trazedone, methadone, elavil and one a day vitamin (energy). I need someone to beleive me and help. Also, a lot of people say their tests came back for benzos too. They don’t have a reason to lie about it to me. So I think something went wrong. Any help will be appreciated.


AskDocWeb: You are right about the disinclination of people to believe someone who has misused drugs. That puts you in a difficult position. It would be helpful to know the name and manufacturer of the specific test kit they used. If you can find that out then you can go on the manufacturer’s website to see what that kit’s rate is for false positives and what has cause them.

Subj: Redbull the energy drink
Date: 9/22/2008
Can Redbull the energy drink cause false postives for alcohol?


AskDocWeb: No, as far as we know there is no alcohol in Red Bull, or anything that would cause a false positive for alcohol.

Subj: Never used cocaine
Date: 9/24/2008
I tested positive for cocaine by means of an oral fluid test. I have never used cocaine! I am on parole and at risk of being sent back to prison! I was prescribed Cephalexin and Hydrocodone for an injury I received at work. The only other substance I have used is loratadine, an antihistamine for allergy relief. Confirmatory tests have not been administered yet… I will share the results if I remain free…


Subj: Phentermine
Date: 9/24/2008
I took a drug test and tested positive for cocaine and have not had any in 4 to 5 months but as soon as I got prescribed phentermine and took a drug test it came back positive for cocaine how could this have happened?


AskDocWeb: Phentermine has been reported to show up as a false positive for Amphetamines and Ecstasy on urine tests (See references 3, 4, and 11) but so far, not cocaine.

Subj: Nasal decongestant
Date: 9/25/2008
I have a cps case, and my children were taken today. The only thing my wife was using was ELIXIR antihisfamine nasal decongestant, can this give a fasle postive on a instance test?? Please email me asap!!! or Call 916xxx-xxxx. I really need to know as soon as possible..


AskDocWeb: Please note that we are not set up to give instant replies, nor do we reply by email. The only nasal sprays listed to show up as a false positive were Vicks inhaler and Afrin. (See references 2, 10, 16, and 21)

Subj: Disabled male
Date: 9/26/2008
I was given a urinalysis and it came back positive for opiates and cocaine. I am a 43 year old disabled male, and at the time was taking an antibiotic called “Bactrim DS” for an infection, could this have caused a false positive? I DO NOT use either of these drugs and I feel like I’m being accused of Drug Use.


AskDocWeb: While Bactrim DS is not on the list, urine tests do seem to have a problem correctly identifying antibiotics. Get a GC/MS confirmation test to clear up the question of drug abuse.

Subj: Lidazone or matte de coca tea?
Date: 9/26/2008
I have been going to a pain a mangement Dr for over a year and just recieved a letter stating I had a positive drug test for cocaine. I do not do illegal drugs and will be in real touble without my Doctor. Can Lidazone rectal creme cause a false positive? What about drinking matte de coca tea?


AskDocWeb: Sorry Lori, neither are listed as products that show up as false positives.

Subj: 5 Panel
Date: 9/26/2008
What does 35307N Nida 5 Panel stand for?


AskDocWeb: That depends on which 5 panel test you are looking at; Medimpex, Multi-Drug Dip Test, and is it a urine or saliva test? Look for a website for the manufacturer of the test. If they have a customer service email, you can ask them.

Subj: Indicative of heroin use
Date: 9/27/2008
I was recently at the Doc’s office & was told I needed another urine test. I do take Oxycontin & MSIR for chronic pain X 10 + years, due to severe chronic pain, Ehlers Danlos Syndrome, Arnold Chiari Malformation & over 50 (and counting) operations. I had also been given a Medrol pack twice & Lexapro for a short time. I was then told that the real reason that they had taken the additional urine test, was that my morphine level came back higher then usual, which didn’t surprise me, as I do take it PRN and had been taking more then usual due to a flair that prior week or 2. They said, “The lab said that it was indicative of heroin use!” I’m mortified, as I’ve never touched the stuff & wouldn’t know it, if I saw it. Could this be the result of the Medrol and/or the Lexapro? And, now that they did a specific test for Heroin, could it actually show positive? Note: I had only taken the Lexapro for @10 days & didn’t for at least a week or more before the heroin test. Thanks.


AskDocWeb: Neither Medrol nor Lexapro have been reported to cause a false positive for heroin. On the other hand, morphine is a pure opioid agonist and an overdose could easily show up.

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