Why Test Before the First Day?
Pre-employment drug testing is the most widely used type of workplace drug screen in the United States. The logic is simple: it's far easier to not hire someone who tests positive than it is to manage, discipline, or terminate an employee who tests positive after they're already on your team.
For San Diego employers, pre-employment testing also signals to applicants — and your current workforce — that you take workplace safety seriously. High-quality job candidates are rarely deterred by drug testing. Low-quality candidates sometimes self-select out, which is exactly the point.
When Should the Test Happen?
Best practice is to make the job offer contingent on a negative drug test result. This is called a "conditional offer of employment." Once the offer is extended, the applicant should be tested before their first day — or more specifically, before they perform any safety-sensitive duties.
For DOT employers, this is non-negotiable: a CDL driver, for example, cannot operate a commercial motor vehicle until a pre-employment DOT drug test returns negative.
Do not test applicants before making a conditional offer. In California, testing at the application stage before an offer has been made can create legal exposure.
California AB 2188 — What Has Changed for Marijuana
As of January 1, 2024, California AB 2188 restricts employers from discriminating against employees or applicants based on off-duty marijuana use as detected through standard urine tests — with exceptions for safety-sensitive positions and federally regulated roles.
This law is nuanced. For many San Diego employers, pre-employment marijuana testing is still legal and appropriate — particularly for safety-sensitive roles, DOT-regulated positions, or employers with federal contracts. Work with your HR team or employment attorney to ensure your policy is updated for the current California environment.
How Mobile Pre-Employment Testing Works
Rather than sending every new hire to a clinic — where they'll wait 30–60 minutes, lose half a morning, and start their job already frustrated — On Point Drug Testing comes to you. We can be at your San Diego County location within hours of your call. The collection takes about 15 minutes per person, and for Non-DOT rapid screens, results are available on-site.
For employers who are onboarding multiple people, we can batch test a group in a single visit, minimizing disruption. Call us at 619-241-4415 or order online to schedule.
What Panel Should I Use for Pre-Employment?
For most San Diego employers, the Non-DOT 5-panel covers the most commonly abused substances. If your industry warrants it, the 10-panel adds prescription drug coverage. DOT-regulated employers must use the federal 5-panel — no modifications. See our 5-panel vs. 10-panel comparison for help deciding.