Can levalbuterol (Xopenex) cause urine to test positive for amphetamines? —William L. Powell, Orland, Calif. Drug screens falsely positive for amphetamines have been associated with use of the Vicks ...

Faulty drug tests given to thousands of California prisoners gave false results for opiates Prison advocates worry that the false positive results have tainted the parole decision for inmates.

MIAMI-DADE COUNTY, Fla. — Two people have been arrested after false drug test results were presented to a Miami-Dade County judge, the Miami-Dade State Attorney’s Office announced Tuesday in a press ...

ALBANY, N.Y. — New York’s prison system unfairly punished more than 2,000 prisoners after tests of suspected contraband substances falsely tested positive for drugs, according to a report released ...

Which drug tests are best? There are many reasons for a portable drug test. Some businesses require drug tests for employment or following an on-site accident. School sports teams may do a random ...

Workplace drug testing is no longer a niche practice reserved for high-risk industries. Across the UK, employers in transport ...