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Trucking complianceRead at source, 24 September 2026

FMCSA Drug and Alcohol Clearinghouse: The Pre-Employment Query and Drug Test, Explained for Carriers

This is for motor carriers and other employers of CDL drivers. Before a new driver performs any safety-sensitive function, you must run a full pre-employment query of the FMCSA Drug and Alcohol Clearinghouse, which the driver has to approve electronically inside the Clearinghouse, and you must have a verified negative pre-employment drug test from the medical review officer. The two are separate requirements under 49 CFR 382.701 and 382.301, and one does not replace the other. Queries cost $1.25 each, and you must also query every driver you employ at least once a year.

What the FMCSA Drug and Alcohol Clearinghouse is

The FMCSA Drug and Alcohol Clearinghouse is a federal database of drug and alcohol program violations by commercial driver’s license and commercial learner’s permit holders. Employers, medical review officers (MROs), substance abuse professionals (SAPs) and consortium/third-party administrators (C/TPAs) report into it. Employers query it before hiring and every year after that.

Its purpose is to stop a driver from quitting after a positive test or refusal and starting again at the next carrier without anyone knowing. Before the Clearinghouse, the only way to find a past violation was to ask each previous employer and wait for an answer. Now a violation follows the driver until the return-to-duty process is finished.

The rule covers employers of drivers who operate a commercial motor vehicle in commerce and are subject to the CDL requirements of part 383, under 49 CFR 382.103. If you run CDL drivers, you are in. An owner-operator who employs only himself or herself is both the employer and the driver and has to meet both sets of duties.

What a query can show

A full query releases these records to you, as listed in 382.703(b):

A verified positive, adulterated or substituted drug test result.
An alcohol confirmation test with a concentration of 0.04 or higher.
A refusal to submit to a test.
An employer’s report of “actual knowledge” of on-duty alcohol use, pre-duty alcohol use, alcohol use following an accident, or controlled substance use.
A SAP report that the driver completed the return-to-duty process, a negative return-to-duty test, and an employer’s report that follow-up testing is complete.

A violation stays visible until four things are true, under 382.719: the SAP has reported, the employer has reported a negative return-to-duty test, the current employer has reported that all follow-up tests are complete, and five years have passed since the violation. Until all four are met, it shows up in your query.

The Clearinghouse pre-employment query, step by step

The rule itself is short. 49 CFR 382.701(a) says employers “must not employ a driver subject to controlled substances and alcohol testing under this part to perform a safety-sensitive function without first conducting a pre-employment query of the Clearinghouse.” It must be a full query, which “requires that the individual driver give specific consent.” Here is how that works in practice.

1. Register your company, once

Every employer must register before it can query or report, under 382.711. Registration includes your USDOT number and the names of the people you authorize to query and report, which you must verify every year. If a C/TPA runs queries for you, name it in the registration. Registration lasts five years, and FMCSA cancels it if you have not queried or reported for two years (382.713). Registration itself is free, according to the Clearinghouse FAQ.

2. Buy a query plan

FMCSA’s answer on cost is one line: “Queries are a flat rate of $1.25 per query” (FMCSA). Limited and full queries cost the same, and the Clearinghouse says purchased queries never expire. Drivers do not pay to register or to give consent.

3. Get the driver registered and send the consent request

This is the step that delays start dates. A full query needs the driver’s electronic consent inside the Clearinghouse, and the FAQ says “a driver will need to be registered to provide electronic consent in the Clearinghouse if a prospective or current employer needs to conduct a full query.” Many drivers, especially new CDL holders, have never registered. Tell applicants at the first phone call that they will need a Clearinghouse login, and send the consent request as soon as you decide to move them forward. You also need the driver’s written or electronic consent before any query, and you keep it for three years from the last query (382.703(a)).

4. Read the result

The Clearinghouse reports a status such as “Driver Not Prohibited” or “Driver Prohibited,” along with “Pending driver consent” while you wait. If the driver is prohibited, 382.701(d) bars you from letting them perform any safety-sensitive function unless the query shows they have completed the SAP evaluation, referral and education or treatment, and have a negative return-to-duty test. If follow-up testing is still open, you can hire only if you take on managing that follow-up testing.

5. Keep the record, and watch the next 30 days

If a violation is entered for that driver in the 30 days after your query, FMCSA notifies you (382.701(c)). Query records must be kept for three years, and since January 6, 2023 a valid Clearinghouse registration satisfies that requirement (382.701(e)).

If a driver will not grant consent, the decision is made for you: under 382.703(c), no employer may let that driver perform a safety-sensitive function.

Full query vs limited query

The two Clearinghouse query types (49 CFR 382.701 and 382.703)
	Full query	Limited query
When it is used	Required before hire (pre-employment). Also required within 24 hours if a limited query shows information.	Can satisfy the annual query for current drivers.
What it returns	The violation records themselves	Only whether information exists, without releasing it
Driver consent	Electronic consent given inside the Clearinghouse, for each query	General consent obtained outside the Clearinghouse; it can be on paper and can cover more than one year
Cost	$1.25	$1.25
If the driver refuses consent	Driver may not perform safety-sensitive functions	Driver may not perform safety-sensitive functions

The annual rule is in 382.701(b): query every driver subject to testing “at least once per year.” If a limited query shows that information exists, you must run a full query within 24 hours. If you do not, the driver comes off safety-sensitive duty until a full query shows no prohibition.

Pre-employment drug test for CDL drivers

The query tells you about the past. The pre-employment drug test tells you about now. 49 CFR 382.301(a) says no employer shall let a driver it intends to hire perform safety-sensitive functions “unless the employer has received a controlled substances test result from the MRO or C/TPA indicating a verified negative test result for that driver.” A collected specimen or a test in progress is not enough. You need the verified negative result.

A DOT drug test covers five drugs or classes and no others. Under 49 CFR 40.82, labs test for marijuana metabolites, cocaine metabolites, amphetamines, opioids and phencyclidine (PCP), and “must not test ‘DOT specimens’ for any other drugs.” If you want a broader panel, it has to be a separate non-DOT test under your own policy and your state’s law. Our drug testing laws by state page covers those limits.

The narrow exception

You can skip the pre-employment drug test only if every condition in 382.301(b) is met: the driver took part in a compliant testing program within the previous 30 days; while in it, the driver was either tested within the past six months or was in the random testing program for the previous 12 months; and you have confirmed that no prior employer you know of has a violation on record within the previous six months. You must also contact the program and get and keep its name and address, confirmation that the driver took part, the date of the last test, and any results from the past six months. In practice, running the test is usually simpler than documenting the exception.

Pre-employment alcohol testing is optional

Alcohol testing before hire is allowed but not required (382.301(d)). If you do it, you must test every new safety-sensitive employee, not some of them. You must test only after a contingent offer of employment, and the driver cannot start unless the result is below 0.04.

The rest of the DOT program, including random rates, post-accident and reasonable-suspicion testing, is on our DOT drug testing requirements page.

How the Clearinghouse fits with the previous-employer check

Under 49 CFR 391.23(e)(4), “as of January 6, 2023, employers subject to § 382.701(a) of this chapter must use the Drug and Alcohol Clearinghouse” to meet the drug and alcohol part of the safety performance history check for FMCSA-regulated employers. Two gaps remain, and both catch carriers out:

Other DOT modes. If the applicant worked under a different DOT agency’s testing program, for example transit, rail, aviation or pipeline, you must still request the drug and alcohol information directly from those employers. For FMCSA-regulated carriers, 49 CFR 391.23(e) sets the look-back at three years before the application.
Unfinished follow-up testing. If the applicant is still in follow-up testing, request the follow-up testing plan directly from the previous employer.

There is also a question you must ask the applicant. Under 40.25(j), ask whether they tested positive or refused on any DOT pre-employment test in the past two years for a job they applied for but did not get. If they say yes, they cannot perform safety-sensitive functions until they document completion of the return-to-duty process.

The query result, the consent and the previous-employer responses all belong in the driver’s file. Our driver qualification file checklist sets out the rest of the file, and the MVR check and PSP report pages cover two other records many carriers pull before hire.

What changed with Clearinghouse-II and CDL downgrades

Since November 18, 2024, state licensing agencies must check the Clearinghouse before they issue, renew, transfer or upgrade a CDL or CLP, and must not do so for a driver who is prohibited (49 CFR 383.73). When a state learns that a current CDL or CLP holder is prohibited, it must downgrade the license and record that on the driver’s record within 60 days (383.73(q)). FMCSA’s own summary is plain: “Having a ‘prohibited’ Clearinghouse status will result in losing or being denied a CDL or CLP” (Clearinghouse).

For employers, this does not replace your own query. It means a driver with an unresolved violation may also have a downgraded license, so check the license status on the MVR as well as the Clearinghouse result. Once the driver completes return-to-duty and the status changes to “not prohibited,” the state may reinstate the privilege, if state law allows.

Your reporting duties once the driver is hired

Querying is half the system. Employers also report, by the close of the third business day after obtaining the information (382.705(b)):

Alcohol confirmation tests at 0.04 or higher.
Negative return-to-duty test results.
Refusals to take an alcohol test, and the refusal-to-test determinations the employer makes.
Completion of all follow-up tests in the SAP’s plan.

MROs report verified positive, adulterated and substituted drug results within two business days. Anything you learn from a query may be used only to decide whether a prohibition applies, and may not be shared with anyone not directly involved in that decision (382.723(b)). Violations of part 382 carry the civil and criminal penalties of 49 U.S.C. 521(b) (382.507).

Common mistakes

Letting the driver start while consent is pending. A pending consent is not a result. No full query, no driving.
Running a limited query before hire. Pre-employment requires a full query. A limited query only satisfies the annual check.
Treating a collected specimen as a pass. The rule requires a verified negative result before the first safety-sensitive function.
Stopping at the Clearinghouse for drivers from other DOT modes. Transit, rail, aviation and pipeline employers still have to be asked directly.
Forgetting the annual query. Every driver, every year, including long-tenured drivers and part-timers.
Letting registration lapse. Two years without a query or report cancels it, and a new hire’s start date is the wrong time to find out.
Asking drivers to fix records through you. Drivers petition FMCSA directly, and only for administrative errors such as data entry mistakes or duplicate reports, not the accuracy of a test result (382.717). FMCSA decides within 45 days of a complete petition.

The query takes minutes once the driver has consented. The slow part is getting a driver to apply in the first place. In Boostpoint’s 2026 benchmark of 891 managed Meta campaigns, the CDL truck driver role family had a median cost of $26.86 per applicant, with the middle half of campaigns between $17.00 and $42.31. Only 8% of drivers who clicked finished the application. Cost per applicant is not cost per hire, and every applicant who does apply still has to clear the query, the drug test and the rest of the file.

Build the Clearinghouse step into your hiring flow

Drivers can drop out between the offer and the first dispatch, and a stalled Clearinghouse consent is one of the places it happens. A few habits keep that gap short:

Mention the Clearinghouse login in the job ad or the first call, so it is not a surprise.
Send the consent request and schedule the drug test on the same day you make the conditional offer.
Give the driver the Clearinghouse registration link and a named person to call if they get stuck.
Track pending consents daily. An applicant who has not consented in a day or two usually needs a call, not another email.

Frequently asked questions

What is the FMCSA Drug and Alcohol Clearinghouse?

It is a federal online database of drug and alcohol program violations by CDL and CLP holders, run by FMCSA. Employers, medical review officers, substance abuse professionals and third-party administrators report violations into it. Employers must query it before a driver performs safety-sensitive work and then at least once a year for every driver subject to testing, under 49 CFR 382.701.

Is a Clearinghouse pre-employment query required for every new CDL driver?

Yes. Under 49 CFR 382.701(a), employers must not let a driver subject to DOT testing perform a safety-sensitive function without first running a pre-employment query. It must be a full query, which requires the driver's specific electronic consent inside the Clearinghouse. A limited query does not meet the pre-employment requirement.

How much does a Clearinghouse query cost?

FMCSA says queries are a flat rate of $1.25 per query. Limited and full queries cost the same, you buy them in a query plan, and the Clearinghouse says purchased queries never expire. There is no fee to register, and drivers do not pay to register or to give consent. Your consortium or third-party administrator may charge separately for running queries for you.

What happens if a driver will not consent to a Clearinghouse query?

You cannot use them as a driver. Under 49 CFR 382.703(c), no employer may permit a driver to perform a safety-sensitive function if the driver refuses the required consent. The same rule appears in 49 CFR 391.23(f)(2) for the pre-employment check. The driver needs a Clearinghouse account to give electronic consent for a full query.

Is a pre-employment drug test required for CDL drivers?

Yes, in almost every case. Under 49 CFR 382.301, you must receive a verified negative drug test result from the medical review officer before a new driver performs safety-sensitive functions. The only exception requires proof that the driver was in a compliant testing program in the last 30 days and was recently tested or in a random pool, with documentation.

Does the Clearinghouse replace the pre-employment drug test?

No. They are separate requirements. The Clearinghouse query shows past violations and whether the driver is prohibited. The pre-employment drug test, required by 49 CFR 382.301, shows a current verified negative result. You need a full query and a verified negative test before the driver's first safety-sensitive function.

How long do violations stay in the Clearinghouse?

A violation stays available to employers until the driver has completed the return-to-duty process, the employer has reported all follow-up tests as complete, and five years have passed since the violation. All of those conditions must be met under 49 CFR 382.719. Until then, the violation appears in full queries by any employer the driver consents to.

Do I still need to contact previous employers about drug and alcohol history?

Partly. Since January 6, 2023, 49 CFR 391.23(e)(4) requires FMCSA-regulated employers to use the Clearinghouse for that check. You must still contact employers regulated by other DOT agencies, such as transit or aviation, and request any unfinished follow-up testing plan from the previous employer directly.

How often do I have to query the Clearinghouse for current drivers?

At least once a year for every driver subject to DOT testing, under 49 CFR 382.701(b). A limited query can satisfy this with the driver's general consent, which can be on paper and cover more than one year. If a limited query shows that information exists, you must run a full query within 24 hours or pull the driver.

Can a driver lose their CDL over a Clearinghouse violation?

Yes. Since November 18, 2024, state licensing agencies must check the Clearinghouse before issuing, renewing, transferring or upgrading a CDL, and must downgrade the license of a driver in prohibited status within 60 days of being notified, under 49 CFR 383.73. The privilege can be reinstated after the return-to-duty process is complete, if state law allows.

Need more drivers to run through the Clearinghouse?

We run Facebook and Instagram job ads for carriers, with a short mobile application and quick follow-up, so more qualified CDL drivers reach your consent request and drug test.

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Sources: 49 CFR 382.103, 382.301, 382.507, 382.701, 382.703, 382.705, 382.711, 382.713, 382.717, 382.719 and 382.723; 49 CFR 383.73; 49 CFR 391.23; 49 CFR 40.25 and 40.82; FMCSA query cost guidance; FMCSA Clearinghouse FAQ and Clearinghouse-II notice; Boostpoint 2026 Social Job Advertising Benchmark. General information, not legal advice. Read at source 24 September 2026.