PEOs can also offer basic levels of background & drug screening.

"We could use that information to do drug screening," he added, possibly finding ways to prevent the nerve cell death.

It is now planning to begin random drug screening of veteran employees.

Some companies even track bathroom visits and require regular drug screening.

Another addict started testing negative for drugs when his employer started drug screening.

Essentially, the substance disintegrated during drug screening and thus was not detectable.

Of the $66 million set aside to provide drug screening and treatment for addicts, roughly $12.5 million was spent.

Traces of cocaine showed up in a drug screening, he said.

B10 ABC will begin drug screening of prospective employees, beginning next month.

Following an interview Lopez was offered the position, subject to passing a drug screening and a background check.