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Random testing
Last Updated: 09/24/2026

Random testing sends employees chosen by chance for unannounced drug and alcohol tests. DOT-regulated employers must do it; other employers can do it under company policy. The Med-Stop Random Selection Service runs the program in the employer app: it keeps your pools, makes the selections, and tracks each one until the test is done.

How it works

  1. Set up the service. Turn on DOT and non-DOT random selection for drug and alcohol tests, sign the agreement, and choose the defaults. Start using random testing
  2. Pools are created. Med-Stop can create DOT pools automatically each year with the DOT-specified target percentage, or you create pools yourself. Create a random pool
  3. Employees become members. Covered employees are included by DOT status, employment status, and category. Keep employee records current. Review random pool members
  4. Selections are made. At the start of each selection period Med-Stop selects employees and test dates at random, and adds selections if the pool grows. How random selections are generated
  5. Notify and test. Check your open selections, create a test request, and notify the employee, who must go for the test immediately. Create a test request for a random selection
  6. Close the selection. A test done through Med-Stop closes the selection automatically; otherwise record the test or set the final status. Change a random selection status
  7. Monitor and report. Watch completed versus target percentages and run pool and selection reports for audits. Random testing reports

DOT and non-DOT pools

DOT poolsNon-DOT pools
Target percentageAt least the DOT minimum rate, which can change each year (rates)Set by your company policy
MembersAll covered safety-sensitive employeesChosen by employment status and category
Pools per test typeOne active DOT pool per test typeAs many as you need

Company pools and consortiums

The Med-Stop Random Service runs pools of your own company's employees; Med-Stop itself is not your consortium or TPA. A company pool needs an average of at least two members before selections are made. An owner-operator must be in a consortium pool run by a C/TPA. If a C/TPA runs your random program, it manages the setup and pools. Owner-operators and consortiums

The Random menu

  • Random Service Status: open selections, upcoming selections, active pools, and service status. Random service status
  • Random Pools: pools by year, test type, and DOT status. Find random pools
  • Random Selections: every selection and its status. Review random selections
  • New Random Pool, Random Service Agreement, and TPA Documents.

Get started

TopicWhat it covers
Start using random testingTurn on the service and sign the agreement.
Random service setup optionsEvery setup option explained.
Start random testing partway through the yearSkip periods that already passed.
Non-DOT random testingCompany-policy pools and targets.
Stop using random testingTurn off the service.

Pools

TopicWhat it covers
Find random poolsFilter pools and read their statistics.
Create a random poolPool wizard step by step.
Random pool settingsTarget, frequency, dates, members, and options.
Review random pool membersWho is in the pool and why.
Exclude an employee from random selectionWhen and how to exclude someone.
Random pool detailsPool settings, statistics, and deletion.

Selections

TopicWhat it covers
Review random selectionsFind open, upcoming, and past selections.
Random selection detailsOne selection, its request, test, and history.
Create a test request for a random selectionSend the selected employee for testing.
Record a test for a random selectionClose a selection with a test done elsewhere.
Change a random selection statusClose a selection that cannot be completed.

Rules and background

The Random menu appears only when your company has random service access and your user has permission.

Do you need more information?

If you need our assistance, or want to know more about Med-Stop, please use our Support contact form, send e-mail to support@med-stop.com or call at 1-(877) 633-3633