i had a dye put in my eye that had proparacaine in it, do all caines show up as like cocaine? i haven't done anything thats all i can thinnk of to give a false positive. any answers? thx ## Not all but this one in particular, cocaine been around as use for an esthetic for 100 years or longer and still used to day. this has trace amounts cocaine due to its make up and location it used at (eye). Just let the mro know ## That is correct, some of them do contain Cocaine derivatives, however, the amounts are usually so small that they don't show up on drug screenings, unless too much was used or you had several procedures in a row. Have you informed the people that performed the test and spoken to your eye doctor?