Does cocaine show up on a drug test?

Along with testing the sample for the presence of the cocaine metabolite benzoylecgonine, a testing facility must also run other tests on the sample to determine its pH level and creatinine concentration. Cocaine is detectable by standard drug tests on urine up to 72 hours after use. read more

Due to these variations in urine concentration, positive test results can occur following a negative test result, although no additional cocaine was used. Many people try to avoid a positive test result by "watering up," or drinking large amounts of fluids to dilute their urine. read more

That’s one more thing for a drug test to pick up, and it typically lasts even longer in the system. Methods of Testing. The most common methods of testing for cocaine are urine or hair. Urine drug testing remains the most non-invasive method, and the most universally available. read more