If done correctly, drug testing for cocaine is pretty accurate no other drug(s) should trigger a positive result. Most drug tests that check for cocaine use look for benzoylecgonine, a product of the body's metabolism of cocaine that can be detected in urine for around three days after using the substance.

According to the guidelines set by the U.S. Department of Health and Human Services and the Substance Abuse and Mental Health Services Administration (SAMHSA) for evaluating the result(s) of a drug test, no prescription medications will cause a false positive. Furthermore, studies have shown that even passively inhaling the smoke from crack cocaine will not result in a positive test result.

In some situations, health care providers may use topical anesthetics that actually contain cocaine itself, which can cause a positive result. In doing so, however, they are also required to document the substance's use, which can be helpful in better understanding a drug test result. The use of other topical anesthetics, such as Novocain and lidocaine, will not produce positive results.

One last possibility for a positive drug test result for cocaine is drinking coca leaf tea, which is popular in a handful of countries outside of the United States. Coca leaf tea has detectable amounts of cocaine and is therefore banned from the U.S., but it could be that the tea was consumed outside of the country.

Cocaine Dipstrip Drug urinalysis

Saliva 5 Drug Test Kit (THC/COC/OPI/MET/BZD)