A urine drug test can quickly detect both illegal and prescription drugs in a person’s system. Doctors, sports officials, and many employers require these tests. Signs of drug use can remain in ...

Drug testing may be required as a prerequisite for some jobs. State laws may dictate when private employers can require drug tests and how they can use the results. Job candidates for “safety ...

The addition later this year of oral-fluid drug testing for marijuana, which typically detects use only for up to 72 hours after use, could allow truck drivers to use the drug and avoid detection ...