Drug & Alcohol Clearinghouse queries for employers
When carriers run a full query before a driver starts, how the annual limited query works, and how long to keep the records.
- Published
- Published 2026-04-18
- Reading time
- 3 min read
The FMCSA Drug & Alcohol Clearinghouse is the database where employers look up whether a driver subject to testing has a drug or alcohol program violation (49 CFR 382.701).
Short answer
Before a driver performs a safety-sensitive function, run a full query with the driver’s specific consent. At least once a year, run a query on every driver you employ who is subject to testing. A limited query is enough for that annual check, and if it shows information exists, run a full query within 24 hours. Keep a record of each query for 3 years.
Typical workflow
Register your company
Register with FMCSA’s Clearinghouse if you have not already.
Get the driver’s consent
A full query needs the driver’s specific consent. If the driver refuses, you must not permit them to operate a commercial vehicle for you.
Run the pre-employment full query
Complete it before the driver’s first safety-sensitive function.
Run the annual query
A limited query with the driver’s consent satisfies the annual requirement. That consent can cover more than one year.
Act on what it shows
If a limited query shows information exists, run a full query within 24 hours, or take the driver off safety-sensitive work until you do.
Keep the record
Retain a record of each query and what came back for 3 years.
What the query can block
An employer may not allow a driver to perform safety-sensitive work if a query shows a verified positive, adulterated or substituted drug test result, an alcohol result of 0.04 or higher, a refusal to test, or a reported on-duty or pre-duty use violation, unless the driver has completed the return-to-duty process and the follow-up testing plan.
Example in DQid
Query records can be added to the driver file like other documents, so the date of each query sits beside the rest of the file.
- Not submitted
- Under review
- Compliant
Sources
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