I have been taking oxycodone 30 mg for about 3 months. I ran out last Monday and took some recent left over lorbab 10's and 1 recent leftover morphine, all of which are hydrocodone related I believe. Like I said I took the last oxycodone 30mg on Monday morning, then Monday afternoon took 1 morphine and Tuesday and Wednesday and Thursday morning took lortab 10's. When I went to lab-corp to have my blood taken and a urinalysis, it all came back NEGATIVE. Does anybody know WHY this would be. My doctor practically accused me of getting narcotics just to sell them. Well I am DEFINITELY NOT. I have a cracked vertebrea in my L5 and need back surgery. I do take all of my medications and do NOT sell them. I am overweight for my height, about 70 lbs. Does anybody think this would be a factor and I have been walking about 1 or 2 miles lately on some days. Would this play a factor in a negative. I searched the internet and found this site. That is why I am asking how long do these stay in blood and urine. I just don't understand why it didn't show up positive. My doctor even went to Harvard so you would think he would know. Any help would be appreciated and the sooner the better because he said he wouldn't prescribe me any more pain medication until next week and then he will have another blood/urine test and if it comes back negative again he said he will report me to my insurance and have it cancelled. And I didn't do anything wrong except follow my doctors orders. If anything I took them a little to often. It said every 4 hours so I took them 6x per day because I don't sleep all night and I take one in the middle of the night.
please advise me of something if anybody knows.
thanks

Did you tell lab corp about all the meds you take? You probably had it in your system BUT because you have a lergal perscription for them "YOU PASSED". That's how that works. I hope this helps. Let me know if that answered your question.

You need to call lab corp & see if that's what happened.( people can't do their jobs correctly now adays) sounds like something that would happen to me. Good luck hon & let me know if that helped you (I hope so)

You are not alone. The semi/synthetic opioids pose an ongoing problem in drug compliance testing. There are a number of reasons for this including but not limited to the following:
1) the wrong test was ordered. A standard opiate test will seldom detect oxycodone. It requires a special test. A 2009 survey disclosed that 88% of doctors surveyed were unaware of this requirement.
2) the wrong test was performed at the laboratory.
3) test error.
4) type test (immunoassay v. GC/MS) IAs have a high error rate.

At the link following I have listed the agencies that can offer some assistance. You should immediately notify the lab of their error and request a copy of the test and the chain of custody form for your sample and advise them to properly store and preserve you samples. For additional info see:
https://www.askmehelpdesk.com/medica...st-393019.html

Once again, this is an ongoing problem with the opioid class drugs and the testing field. It effects thousands of people and you should take direct action to correct the error.