<p>Employee Drug Screening can take place prior to employment or during employment, either on- or off-site. Its primary uses are for <a href="/resources/glossary/define-pre-employment-drug-screening">Pre-employment Screening</a>, <a href="/resources/glossary/define-random-drug-testing">Random Employee Drug Testing</a>, <a href="/resources/glossary/define-periodic-announced-drug-test">Periodic Announced Tests</a>, <a href="/resources/glossary/define-safety-sensitive-drug-testing">Safety Sensitive Employee Drug Testing</a>, <a href="/resources/glossary/define-for-cause-reasonable-suspicion-drug-testing">Cause and Reasonable Suspicion Employment Drug Testing</a>, <a href="/resources/glossary/define-post-accident-drug-test">Post Accident Employee Drug Testing</a> and <a href="/resources/glossary/define-follow-up-drug-testing">Follow Up Employee Drug Testing</a>.</p>

