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I use Fentynal Duragesics & Hydromorphone for pain. My drug test showed Morphine which I'm allergic to. How can this be?

I also take Methylphenidate, Topiramate, Diazapam, Baclofen, Venlafaxine, Levothyroxine & Ranitadine.

I had a cold/flu that turned into bronchitis for 3 weeks just prior to my UA so was taking both a day & nite time Severe Cold & Flu medication with the following ingredients; 

Daytime= Acetaminophen, Dextromethophan HBr, Guiafenesin, Phenylephrine HCI.

Nite time= Acetaminophen, Dextromethorphan HBr, Doxylamine succinate 

Could any of those meds or ingredients have effected my test results?