Amid Widespread Recruiting and Retention Challenges, Drug Positivity Increases in Post-Accident Tests at a Faster Rate Than Pre-Employment Tests for Cocaine, Marijuana, Opiates and Oxycodones SECAUCUS ...

Overall Drug Positivity Holds Steady at Historically High Rates while Marijuana Positivity Continued Upward Climb in the General U.S. Workforce Marijuana Positivity in the General U.S. Workforce ...

The rate of substituted or invalid drug tests — an indication of tampering to hide drug use — rose more than six-fold in 2023 versus the prior year, according to a Quest Diagnostics analysis of 9.8 ...

SECAUCUS, N.J., Sept. 2, 2025 /PRNewswire/ -- The percentage of employees in the general U.S. workforce testing positive for fentanyl in random drug tests far exceeded those in pre-employment testing, ...

SECAUCUS, N.J., May 18, 2023 /PRNewswire/ -- The percentage of employees in the general U.S. workforce testing positive for marijuana following an on-the-job accident increased to its highest level in ...

More Americans are failing drug tests because of pot than ever before, and the solutions to the problem range from blaming legalization to dropping drug testing for pot altogether. Quest Diagnostics ...

SECAUCUS, N.J., April 11, 2019 /PRNewswire/ -- The rate of workforce drug positivity hit a fourteen-year high in 2018, according to a new analysis released today by Quest Diagnostics (NYSE: DGX), the ...

SECAUCUS, N.J. - Quest Diagnostics (NYSE:DGX), a $20.2 billion healthcare diagnostics leader currently trading near its 52-week high at $179.88, announced Thursday the launch of a new pharmacogenomic ...

Quest Diagnostics has announced that it will now offer consumer-initiated laboratory testing powered by QuestDirect in collaboration with Walmart. The new solution allows people to take control of ...