If you end up in the emergency room here in North America, and youre diagnosed with migraine, theres a very good chance youll end up with an. Find out which drugs can potentially cause a false positive drug test including additional details on the more commonly used substances. I have had false positive tests for thc. I am perscribed for tylenol 3 times a. com review Douse was arrested a week later and charged with attempted murder, assault, menacing and criminal possession of a. Up until a week ago, I thought there were only three: The clitoris, the GSpot, and the USpot. Substances that cause False Positive Drug Test Results. THC Substances or Conditions which can cause false positives Dronabinol (Marinol) A false positive urine test result can have three possible sources. WARNING: Methadone should only be prescribed for pain by experienced clinicians! Indubitably, the most difficult opioid conversion challenge to prescribers. 2 Answers Posted in: drug test Answer: The following drugs can cause a false positive for THC: Dronabinol Ephedrine and pseudoephedrine, ingredients often found in decongestants or cold medicines, can cause a falsepositive test for amphetamines. Drug test kits, facts, and home drug testing information on marijuana THC cocaine amphetamines benzodiazepines meth methamphetamines nicotine opiates Stoner Culture is a your resource for all things stoner with marijuana news, trip reports, essays and more..