What does a pre employment drug screen test for? If it is a DOT test, the answer is fixed by federal rule: five drug classes, no more, no less. If it is a non-DOT test, the answer is whatever panel the employer picks.
That split is the whole story. Below is what goes on each one, and where the list comes from.
Under 49 CFR 40.82, a laboratory must test a DOT specimen for these five drugs or classes of drugs:
The analytes in brackets come from the cutoff table in 49 CFR 40.85. "Five panel" counts classes, not substances: the opioid class alone covers seven.
The same section closes the list: a lab "must not test 'DOT specimens' for any other drugs." No benzodiazepines, no barbiturates, no add-ons, for any driver or any employer. Pre-employment uses exactly the same panel and cutoffs as random, post-accident and every other DOT test type.
Full numbers: DOT drug test cutoff levels. Plain-language version: what a DOT drug test screens for.
HHS's panel for federal agency employee testing includes fentanyl and norfentanyl. HHS reaffirmed that panel, unchanged, on March 13, 2026 (91 FR 12308). That is a different program from DOT. The DOT rule in 49 CFR 40.82, as published on eCFR for October 1, 2026, still lists the five classes above. So a DOT pre-employment test does not include fentanyl.
We cannot give you a national ranking: we have not found a source we trust for one. What we can say is what our service pages list.
For CDL hires, it is always the DOT 5-panel urine test, because the rule leaves no choice.
For everyone else, the non-DOT options we collect for are:
Our non-DOT FAQ also notes that some employers add fentanyl to a non-DOT panel.
A non-DOT panel is a laboratory product, not a federal standard, so the exact substances and cutoffs can differ between labs. Ask for the lab's list in writing before you write it into your policy. Comparison of the common sizes: non-DOT panels compared.
Only in the DOT world. The DOT 5-panel is the one test whose contents are set in regulation.
Outside DOT, Utah law does not name a panel. The Utah Drug and Alcohol Testing Act defines "drugs" broadly, as any substance recognized as a drug in the U.S. Pharmacopoeia or other drug compendia (Utah Code 34-38-2(2)), and leaves the choice of test to the employer's written policy. What the Act does require is a confirmation test by gas chromatography, GC-mass spectroscopy or a comparably reliable method before a result counts as a failed test (34-38-6(6)(b)).
No. A DOT test cannot be expanded (40.82). If a vendor offers a "DOT 10-panel," it is describing a non-DOT test.
If you want broader coverage for a CDL driver, it has to be a separate non-DOT test. Under 49 CFR 40.13(b), the DOT test is done first, leftover urine from the DOT test is discarded, and the non-DOT test uses a separate void. It also needs its own legal basis in your company policy.
DOT: urine. DOT rules also allow oral fluid, but as of the HHS laboratory list dated November 2, 2026 (91 FR 68964), there are no HHS-listed oral fluid laboratories, so it cannot be used yet. Details: oral fluid testing under 49 CFR Part 40.
Non-DOT in Utah: the employer chooses. The Act lists urine, blood, breath, saliva or hair as sample types (34-38-2(9)) and lets the employer "designate the type of sample to be used for testing" (34-38-4). Our non-DOT collections are urine panels.
On a DOT urine test, yes: the lab runs validity tests on every primary specimen (40.87). It measures creatinine, checks pH, and tests for oxidizing adulterants. That is how a diluted, substituted or tampered specimen is caught. A substituted or adulterated result is treated as a refusal, not a pass.
On a DOT test, a lab-confirmed positive goes to a Medical Review Officer, who must verify it as positive unless the employee shows a legitimate medical explanation, such as a valid prescription (40.137). The employer never sees the raw lab result.
On a non-DOT test in Utah, the collection paperwork must give the applicant a chance to list prescription or nonprescription drugs they use, and other relevant medical information (34-38-6(4)(b)).
Not automatically. Alcohol is a separate breath test. For CDL drivers it is optional under 49 CFR 382.301(d).
Same panel, same cutoffs. Only the reason for the test changes.
No. The five classes in 40.82 are fixed.
BBB Mobile DOT Drug Testing collects DOT 5-panel and non-DOT 5-panel and 10-panel pre-employment tests on site across Park City, Summit and Wasatch counties and the Salt Lake metro. Start with pre-employment drug testing in Utah, see non-DOT testing, or price a visit in the estimator. Call (435) 395-1459.
BBB Mobile comes to your job site. DOT-compliant collection, SAMHSA-approved lab, MRO-reviewed results. Serving Park City, Heber City, Salt Lake City, and all of Utah.
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