Topical anesthetics derived from cocaine (does not include lidocaine or novocaine) may show fail positive but lidocaine no. If you truly did not use cocaine yet still came up positive, you should insist on additional testing (a GC/MS test ).
No.
No
No
can taking cialis cause someone to fail a drug test for thc
The cough syrups that could cause a drug test to fail require a prescription to purchase.
If it is taken without a prescription, yes you will fail if it comes up positive on a drug test.
no
No
yes it does it shows as THC, cause is made with herbs
Taking drugs
Yes
100mg