What Drugs Cause A False Positive EEG?


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EEG (or electroencephalogram) is used to find out the electrical activity of the brain, which can be abnormal due to a seizure or head injury.

There are some drugs like benzodiazepine and alcohol which can cause abnormality in the electrical activity of the brain.

Xanax is an benzodiazepine, and its prolonged use can cause changes in electroencephalograms. Alcohol abuse can also cause these abnormal changes.
False positive EEG?
  • There are numerous prescription drugs and courses of medication which can cause abnormal electrical activity in the brain. Almost all illegal and abusive drugs can be detected from an EEG test.
  • A lot of prescription drugs either contain, or cause the body to produce substances such as benzodiazepine, that will cause a positive result on a EEG drug test.
  • If you are on prescribed medication, then it would be wise to take your prescription form - and if possible a letter from your doctor - to the EEG test. The technician there will then be able to determine if there is a risk of a false-positive result. If this is the case you may have to undergo more drug screenings which take into account the effect of the medication you have been prescribed.

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