Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Urine drug test can identify certain drugs that are excreted through urine. It tests positive till the time period the drug gets excreted in urine. The urine drug test usually screens for: i. amphetamines ii. methamphetamines iii. benzodiazepines iv. barbiturates v. marijuana vi. cocaine vii. PCP viii. methadone ix. opioids (narcotics) . Alcohol can also be included in screening tests, but it’s usually detected through breath tests rather than urine screens. A urine drug test can help a doctor detect potential substance abuse problems. After a drug test identifies drugs you may be misusing, doctors can help you start a treatment plan. Taking urine drug tests throughout substance abuse treatment helps to ensure that the plan is working and that you’re no longer taking drugs. If you get a positive result for illegal drugs that you haven’t taken, you should make sure to get a GC/MS follow-up test immediately. You will also want to talk to the medical review officer (MRO). This is the physician in charge of interpreting and reporting the results of any drug testing done in their facility. Hope I have answered your query. Let me know if I can assist you further.