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, ...

More and more workers in the U.S. are testing positive for fentanyl use during random drug tests, according to new data from Quest Diagnostics. After analyzing more than 8 million workforce drug tests ...

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 ...

More and more workers are cheating on drug tests, according to new data from Quest Diagnostics, with tampering rates reaching a 30-year high in 2023. After analyzing nearly 9.8 million workforce drug ...

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 ...

Americans tested positive more often for drugs in 2019 than the last 16 years. Quest Diagnostics, one of the largest US testing providers, said in its annual report that marijuana rates were up while ...

Rite Aid is joining forces with Quest Diagnostics to provide access to molecular testing (polymerase chain reaction or similar nucleic acid amplification test) to help Rite Aid customers detect and ...

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 ...

Two of the nation’s largest clinical testing providers are launching their own assays for the novel coronavirus—moving forward this week after the FDA gave high-tech labs the green light to operate ...

Weeks after launching their own COVID-19 molecular testing initiatives, lab giants Quest Diagnostics and LabCorp have begun offering antibody tests nationwide for the next phase of the coronavirus ...