DOT Drug and Alcohol Testing: The Records a Carrier Must Keep
CabFiles Compliance Team · February 18, 2026 · 2 min read
Testing program records are audited separately from the DQF and held under stricter access rules. Here is what belongs in the program file and how to keep it defensible.
Drug and alcohol testing records are audited as their own program. They are also the records with the tightest confidentiality expectations in a carrier's office, which is why they belong nowhere near the general driver folder.
What the program file holds
- The written policy required under Part 382, and each driver's signed acknowledgement of receipt.
- Pre-employment test results for every driver before first performing a safety-sensitive function.
- Random testing records: the pool, the selection method and dates, who was selected, and what happened with each selection — including a documented reason where a test did not occur.
- Post-accident, reasonable-suspicion, return-to-duty and follow-up testing records where applicable.
- Supervisor training records — the reasonable-suspicion training required before a supervisor can make that determination.
- Clearinghouse query records, including annual limited queries and pre-employment full queries.
- Documentation of refusals, positives, and the return-to-duty process handled through a substance abuse professional.
Why the separation matters
Part 40 restricts who may see testing information and requires the carrier to keep it confidential. Filing a test result inside a DQF exposes it to anyone who handles driver paperwork, and to anyone you hand a driver file to. Keep the program file separate, and keep access to it deliberate — named people, not "whoever is at the front desk".
The records that most often go missing
Random selection documentation. Carriers often have the results but not the selection records that prove the pool and the method. The pool and the dates are the evidence that the program ran.
Supervisor training. One certificate, easy to obtain, frequently absent.
Clearinghouse queries. Annual limited queries are a recurring 12-month obligation, so they slip for the same reason annual MVR reviews slip.
Reasons a selected test did not happen. A driver on leave is a legitimate explanation — undocumented, it looks like a skipped test.
Where CabFiles fits, and where it does not
CabFiles stores testing program documents in a private, per-company archive with restricted access, records the status and dates of each driver's testing and Clearinghouse records, and warns you before recurring obligations come due. Those records go into the audit export as their own group, separate from the DQF.
What CabFiles does not do is act as your consortium or query the Clearinghouse on your behalf. Collection, laboratory work, medical review officer services and Clearinghouse queries are performed by your testing provider and by you in the FMCSA system; CabFiles keeps the resulting records organised, dated and producible.
Related: DOT record retention requirements and the DOT audit preparation checklist.
General guidance on federal testing recordkeeping. Follow Parts 40 and 382 and your provider's instructions; this is not legal advice.
Frequently asked
- Do drug and alcohol test results go in the driver qualification file?
- No. Testing records are kept in a separate, access-restricted file under 49 CFR Part 40, not in the driver qualification file.
- What testing records does an auditor ask for?
- Typically the written policy and driver acknowledgements, pre-employment results, random selection and testing records, supervisor reasonable-suspicion training, Clearinghouse query records, and documentation of any refusals or positives.
Keep every file audit-ready
CabFiles tracks expiry and review dates, scores driver files against the Part 391 checklist, and exports a complete audit packet in one download.
Related reading
- Choosing DOT Compliance Software: 12 Questions Worth Asking
Most compliance tools store documents. Fewer track the dates, restrict access properly, and produce a packet an investigator can read. These are the questions that tell them apart.
- DOT Medical Card Expiration: How to Stop Losing Drivers to a Missed Date
An expired medical certificate can put a driver out of service and a carrier into a finding. Here is how the dates work and how to track them reliably.
- Annual MVR and Driving Record Review: What 391.25 Requires
The annual driving record review is two documents, not one. Here is what 391.25 expects, what the reviewer has to consider, and how carriers keep the 12-month cycle from slipping.