<p>On-site employee drug testing refers either to administering an instant employee drug test that provides results in 3-10 minutes, or the collection of a drug test specimen at the job site by a <a href="/resources/glossary/define-drug-test-technician-dtt">Drug Test Technician (<abbr title="Drug Test Technician">DTT</abbr>)</a>, <a href="/resources/glossary/define-patient-service-technician-pst">Patient Service Technician (<abbr title="Patient Service Technician">PST</abbr>)</a>, or <a href="/resources/glossary/define-third-party-administrator-testing-tpa">Third Party Administrator (<abbr title="Third Party Administrator">TPA</abbr>)</a>.</p>