Drugs-Forum  
Home Wiki Studies Forum Groups Blog Video Images News
Go Back   Drugs Forum > DRUG-FORUMS > Opiates & Opioids
Mark Forums Read
Register Tags

Notices

Opiates & Opioids Opiates & Opioids.

 
Thread Tools
  #1  
Old 23-09-2011, 14:01
rabbitinthemoon rabbitinthemoon is offline
Newbie
 
Join Date: 20-08-2011
37 y/o Female from United States
Posts: 3
rabbitinthemoon is an unknown quantity at this point
Points: 13, Level: 1 Points: 13, Level: 1 Points: 13, Level: 1
Activity: 0.1% Activity: 0.1% Activity: 0.1%
Codeine v. Hydrocodone - False positive on drug test?

SWIM is prescribed fentanyl patches and tylenol with codeine by her pain management doctor.
At her last drug test (a spit test), she came up with a positive for hydrocodone. She has never used hydrocodone and has no idea how this could have happened. She hasn't used any drugs other than what she is prescribed and has never failed a drug test before this.
SWIM's doctor swears that it wasn't caused by the codeine in the Tylenol-3, but she's not sure she believes him.
Can anyone suggest how this might have happened? One more dirty test and SWIM is out a pain management doctor which, due to chronic health issues, she really cannot afford to have happen.
Thanks.
  #2  
Old 23-09-2011, 14:34
salgoud salgoud is offline
Banned
 
Join Date: 14-12-2010
57 y/o Male from Togo
Posts: 1,064
Blog Entries: 1
salgoud must live here.salgoud must live here.salgoud must live here.salgoud must live here.salgoud must live here.salgoud must live here.salgoud must live here.salgoud must live here.
Points: 20, Level: 1 Points: 20, Level: 1 Points: 20, Level: 1
Activity: 17.7% Activity: 17.7% Activity: 17.7%
Re: Codeine v. Hydrocodone - False positive on drug test?

sFirst of all a spit test will not test for specific opiates, it will come back positive for opiates and does not have the capability of distinguishing exactly what opiate it was.

Yes, I myself in 1989-1993 tested UA's at the Colorado Department of Health. I worked in the Toxicology section, in which we processed 650-800 UA's a day. We tested probationers, parolees, police officers, doctors, nurses, drug counselors, and a few other professions.

The first question you ask them is this:"What modality (or technology did you use to test my UA, Elisa, Emit, Saliva test or what?) Because those tests will only distinguish if it's an opiate, barbiturate, methamphetamine, cocaine, THC, PCP, benzodiazepine and other drugs, but it will not tell the tester you took Valium, Xanax, codeine, hydrocodone, Seconal or amobarbital. They just can't do it, the GC/MS can.
The second question is: Did you confirm the UA test with a GC/MS (gas chromatograph/mass spectrometer) to confirm the results (we used three modalities (FIA) also.

If the UA came up hot on all three screens, it would be called hot and sent back to the proper authorities. If it came up hot on the EMIT or ELISA and not the other two or one, then it would be sent back negative.

You see, the first step is just to weed out all the negatives, then we might be left with 20-30 positives. Then through our FIA, some more would get weeded out, then we'd be left with 20 dirties at the time.

However, the GC/MS is the Gold Standard in UA testing, without that test being done, codeine specifically metabolizes to morphine and left over codeine in the gluconerate form. So if you were hot for codeine, we would have a sample of pure codeine to test against your sample, if the spike didn't match exactly it would be called negative. Codeine metabolizes to morphine and some codeine is left excreted unmetabolized, so we would get out pure reference, codeine and test it against yours. If the two major spikes are morphine and codeine (and we are only concerned with the codeine spike) and they didn't match, it would be called negative.

You may have to pay for the test to be done, but in a lab many things can go wrong, like over carry from someone elses urine and contamination from the pipette, if not changed every time.

Have them do a GC/MS and say you will pay for it if it comes back positive, and they will pay if it comes back negative. Sounds far, right? Right. They screwed up, and the GC/MS will make certain it is codeine and not hydrocodone. Plus, usually with these tests, they use ELISA which just comes up positive for opiates, how they can tell it was hydrocodone and not codeine is beyond me. Make sure they do a GC/MS it's worth it. The must keep all positive UA's in the freezer for at least one year. At least we did.

Good luck, the GC/MS will clear this all up.

salgoud

Post Quality Evaluations:
great advice!

Last edited by salgoud; 23-09-2011 at 19:41. Reason: spelling

Share this on:

Tags
apap, codeine, come up, drug, drug forums, drug screen, drug test, drugs, failed drug test, fentanyl, gc/ms, hydrocodone, lortab, opiate, opiates, oxycodone, saliva drug test, saliva test, tylenol, tylenol 3, tylenol 4, vicodin

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
How To Beat Drug Tests Superball Drug testing 132 11-04-2014 18:36
Interesting scholarly drug facts rxbandit Pharmacology 23 08-10-2013 11:56
Good information on passing a drug test Superball Drug testing 40 29-05-2013 01:11
Opinions - Drug Policy Debate: Helpful Links / Sources of Information Bajeda Drug Policy Reform & Narco Politics 12 05-06-2009 13:12

» New Threads
Can a ++++ be obtained through...
Last post by Dangerousdavid
0 Replies, 6 Views
i did DMT, now im lost
Last post by Xakk
12 Replies, 1,671 Views
Those in suboxone/subutex do you...
Last post by Giapsufsu
16 Replies, 313 Views
Nitrous used with LSD, DMT, and...
Last post by Xakk
3 Replies, 99 Views
Poem, "It"
Last post by Qualityplant
0 Replies, 15 Views
Trip Report : First Clonazepam...
Last post by Xakk
0 Replies, 15 Views
First Immersive Experience with DMT
Last post by Xakk
0 Replies, 20 Views
Tramadol+Noopept
Last post by wilzyx
0 Replies, 10 Views
ive finally jumped from 20 year...
Last post by BitterSweet
165 Replies, 8,058 Views
How much Bali Kratom to take?
Last post by darksyntheticmatter
8 Replies, 9,234 Views
» New Wiki Articles

Sitelinks: Information:

All times are GMT +1. The time now is 12:04.


Copyright: SIN Foundation 2003 - 2014, All rights reserved
"Wiki" powered by VaultWiki v3.0.20 PL 1.