Last decade, positive drug tests among U.S. workers for methamphetamine had started to drop. That trend may be reversing, with positive rates dramatically higher in some states compared to others.

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Tags: amphetamines, cocaine, drug testing, Hawaii, methamphetamine, Quest diagnostics

As the drug-testing industry has developed more tamper-proof sampling methods, positive results for employee drug use have gone up.

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Tags: drug testing, heroin, oral fluid testing, Quest diagnostics, urine test

Scenario: One of your employees is taking a legally prescribed medication and works with machinery that has the potential to maim or kill. The label on the medication warns against driving or operating machinery while taking the drug. What do you do?

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Tags: drug testing, Dura Automotive Systems, prescribed medications, Quest diagnostics, Workers' comp

New statistics about employee drug use are out, and they show an increase in usage of some drugs. Is it marijuana, cocaine, crack?

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Tags: employee drug use, hydrocodone, hydromorphone, oxycodones, prescription opiates, Quest diagnostics

New data show that pre-employment drug screenings alone may not be enough of a deterrent for workers.

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Tags: pre-employment drug screenings, Quest diagnostics, random drug testing