A urine drug test, also known as a urine drug screen or a UDS, is a painless test. It analyzes your urine for the presence of certain illegal drugs and prescription medications. The urine drug test usually screens for amphetamines, methamphetamines, benzodiazepines, barbiturates, marijuana, cocaine, PCP, methadone, opioids (narcotics).
You should use these tests when you think someone might be abusing prescription or illegal drugs. If you are worried about a specific drug, make sure to check the label to confirm that this test is designed to detect the drug you are looking for.
Results of this test are expressed in nanograms per milliliter (ng/mL). The test uses a cutoff point. Any result below the cutoff number is a negative screen and any number above the cutoff number is a positive screen. Every lab follows a standard cutoff levels.
