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About Dr. Ravindra Bhaskar Ghooi
Expertise
I can provide information on drugs and medicines, their actions, uses, interactions and adverse effects. To avoid confusion, generic names of medicines may please be provided. I am a pharmacologist, having worked on animal and human pharmacology, and presently I am the Dean of Bilcare Research Academy, where we teach courses on clinical research. We dont work on saturdays and sundays, hence questions reachng me on these days will be replied on Monday, please bear with me.

 
   

You are here:  Experts > Health/Fitness > Pharmacology > Pharmacy > Propoxyphene Napsylate and Acetaminophen

Topic: Pharmacy



Expert: Dr. Ravindra Bhaskar Ghooi
Date: 2/29/2008
Subject: Propoxyphene Napsylate and Acetaminophen

Question
Sir,

I have been reading your post and I have a question regarding my the above Prescription Drug.  I took (1) 100 MG tablet this morning 02/29/2008 07:45am for severe knee pain.  I am to be accepting an offer next week with a Energy Company that requires a mandatory drug screen.  Will the PXP flag in my system if I to take the test on a Tuesday of next week?  I saw your comment that the PXP levels reduce every 12 hours by 50% and I have also heard that it usually is undetectible in 12-48 hours.  

Please let me know when you get the chance so I can arrange proper medical documentation from my doctor if need be.

Many Thanks!!

Answer
Hi Ryan,
These are actually two questions, firstly are they searching for prooxyphene? I dont think so. Most commercial five panel and seven panel tests are searching for opioids, benzos, ampetamines, marijuana barbiturates and such drugs and not drugs like propoxyphene. Propoxy also has low addictive potential, hence  would not even bother to search for it.
Secondly, if they were searching for it, for how long after the dose would they be able to detect it. As I said that PXP levels fall to 50 % every 12 hours, actually the range is 6 to 12 hours. I am considering 12 hours as the worst case scenario. In such a situation they will not be able to detect the drug if they tested you 3 days after the test, that means 3.3.08 you should be clean. If you take the test on 4.3.2008, you should be in the clear. However if you give another two days you will be able to beat any improved drug detection that they may possess, and if you have a peculiar disablity to handle PXP (again a worst case scenario)
I suggest you take the test on 6.3.08, and you will sail through. This takes into consideration all worst case scenarios. However dont put me in the dock by popping another pill of the drug.
Ravi Ghooi

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