OnSite Employer Testing logo — on-site and mobile employer drug and alcohol testing services

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Process

How On-Site Drug Testing Works — Step by Step

Here's exactly what happens when you hire us for on-site or mobile drug testing. The whole process is straightforward — we handle the logistics, you stay focused on running your business.

Simple. Coordinated. Professional.

How On-Site Testing Works

From the first request to final documentation, we keep the process clear so your team can stay focused on the workday.

  • 1

    Request service

    Tell us what you need, from DOT and non-DOT testing to post-accident or occupational health support.

  • 2

    Coordinate logistics

    We align scheduling, access details, and communication with your operation.

  • 3

    On-site collection

    Professional collectors come to your facility or jobsite and handle the collection process.

  • 4

    Documentation & follow-through

    Clear documentation and chain-of-custody procedures help keep the process organized.

Collection timing, availability, and documentation steps may vary based on location, test type, employer program requirements, and scheduling needs.

Ready to coordinate on-site testing for your team?

Call (219) 315-0345 or request service online.

  1. Employer workplace drug testing intake: collection specialist arriving at an office with professional specimen kit and documentation bag for scheduled on-site screening.
    1

    Step 1 — Tell Us What You Need

    Call us or fill out our quote form. We'll ask a few simple questions:

    • How many employees need to be tested?
    • Is this DOT or non-DOT testing?
    • What type of test is needed? (pre-employment, random, post-accident, etc.)
    • What's your location and preferred schedule?

    This usually takes less than 10 minutes.

  2. Mobile drug testing unit workbench: sealed cups, chain-of-custody forms, and shipping supplies organized for employer program documentation.
    2

    Step 2 — We Confirm a Plan

    We review your request and confirm:

    • A realistic collection window that fits your shifts
    • The right test type and paperwork for your program
    • Any site-specific needs (restroom access, private area, gate entry)

    You'll have one clear point of contact from this step forward.

  3. Professional urine specimen collection setup at an employer site: sealed collection cups, gloves, and custody paperwork on a clean staging table.
    3

    Step 3 — We Come to Your Site

    On collection day, our certified collector arrives at your location with all supplies and forms. Here's what happens on-site:

    • Employees check in and verify their ID
    • The collector explains the steps clearly
    • Specimen is collected (urine, oral fluid, or breath alcohol)
    • Chain-of-custody paperwork is completed on the spot
    • Samples are sealed and prepared for your lab or TPA

    A typical visit for a small group takes 1–2 hours. Larger batches are scheduled in windows to minimize disruption.

  4. Oral fluid workplace drug testing: collector with oral-fluid collection device and employer chain-of-custody materials at an on-site collection area.
    4

    Step 4 — Results and Follow-Up

    After collection, samples go to your designated lab. Results route through your TPA or MRO as your program requires. For recurring programs (like quarterly randoms), we coordinate standing schedules so the process repeats smoothly.

How Long Does On-Site Drug Testing Take?

  • Single employee: 20–30 minutes on site
  • Group of 5–10: 1–2 hours
  • Large batch (20+): We schedule in shift windows, usually half a day

Ready to get started?

Request a quote or call (219) 315-0345 — we'll walk you through the first step.