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What Causes A False Negative Result In A Drug Test For Oxycodone?

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Posted on Mon, 27 Jun 2016
Question: 48 female 5 foot 105 lbs I recently failed a drug screen and take my medicine everyday what could cause this and what am I going to say to my doctor I need this medicine I have been on it for 10 years and never failed a urine screen or a count I have just got this new doctor and this is going to look bad on me and I have been having health issures wandering what could cause this to be negative

What should I say when addressing doctor I know test is wrong I have taken my medicine
doctor
Answered by Dr. Dr. Matt Wachsman (22 minutes later)
Brief Answer:
To clarify, a negative screen

Detailed Answer:
for a drug you are taking.

First, make sure the test was for the drug. That is more complicated than it sounds. The standard screen for narcotics would not reliably show fentanyl, oxycodone, or buprenorphine.

Then, it depends a bit on the limit of sensitivity of the test, what drug, how often taken. Most drugs are taken daily and there is quite a margin for error on the test and a negative is not likely.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Dr. Matt Wachsman (13 minutes later)
I have been having alot of issues and feel like I am going to XXXXXXX and this has been reoccuring with bloodwork results
doctor
Answered by Dr. Dr. Matt Wachsman (8 minutes later)
Brief Answer:
you should seek immediate attention.

Detailed Answer:
This is an informational service and without actually being there I cannot treat, diagnose, or prescribe. But I can say that " having alot of issues and feel like I am going to dye" is a reason for immediate evaluation.

http://www.suicidepreventionlifeline.org/

as another source with online chat capability and knowledge of resources particular to your location.

We are an informational service.
But I can mention, that this is not at all the catastrophe that it seems. Worst case scenario with narcotics would be go 1) go to the ER and get evaluation and likely some medications for the short term and 2) information on other pain management and/or addiction treatment centers in your area. There are rather a lot of options.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Dr. Matt Wachsman (15 minutes later)
what does these low levels indicate in my blood been showing up frequently and i have never failed a drug test in 10 years or a count why would this happen
doctor
Answered by Dr. Dr. Matt Wachsman (40 minutes later)
Brief Answer:
cannot say in your particular case.

Detailed Answer:
but, sometimes they don't run the right test.

First, make sure the test was for the drug. That is more complicated than it sounds. The standard screen for narcotics would not reliably show fentanyl, oxycodone, or buprenorphine.

Then, it depends a bit on the limit of sensitivity of the test, what drug, how often taken. Most drugs are taken daily and there is quite a margin for error on the test and a negative is not likely.

so, individual variation, other drugs that increase drug metabolism, timing and dose of the drug can all contribute.
Note: For further guidance on mental health, Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Dr. Matt Wachsman

Addiction Medicine Specialist

Practicing since :1985

Answered : 4214 Questions

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What Causes A False Negative Result In A Drug Test For Oxycodone?

Brief Answer: To clarify, a negative screen Detailed Answer: for a drug you are taking. First, make sure the test was for the drug. That is more complicated than it sounds. The standard screen for narcotics would not reliably show fentanyl, oxycodone, or buprenorphine. Then, it depends a bit on the limit of sensitivity of the test, what drug, how often taken. Most drugs are taken daily and there is quite a margin for error on the test and a negative is not likely.