I tested positive for cocaine from using benzocaine on my teeth and my counselor did research and said it was from the oragel and explained anything that says Caine will do that but then it happened again and the same counselor said it wasn't true and again the only thing I used was the benzocaine does anyone know if this is true or where I can research it?
This is not true. Substances such as Lidocaine and benzocaine will not cause you to test positive for cocaine. To see a list of medication which can cause a false positive for cocaine go to:
Hi Debem... Laurie is correct. Look at the website she has recommended.
Just some interesting tidbits... all local anesthetics end in "Caine." lidocaine, benzocaine, bupivicaine (Marcaine) and some other less common ones are of the "amide" class of local anesthetics." Cocaine and tetracaine are of the "ester" class of local anesthetics. I would surmise that the esters family would be the ones that would test positive for cocaine.
One other interesting tidbit is that cocaine is the only local anesthetic that causes vasoconstriction meaning that it slows down blood flow... this is why it is used in nasal and other types of nasopharyngeal surgeries. Conversely the amides, ie, lidocaine are vasodilators which dilates the blood vessels making the blood flow greater.
Cocaine is the only local anesthetic that has "high" feeling properties.
I hope that this has answered your question. Pardon my expanding on the topic... just felt like teaching a bit!!
Be well... pup
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