HHS resets clock on long-awaited hair testing guidelines

October latest target date for rules that could lead to mandate for truckers

HHS guidelines would be used by FMCSA to set new drug-testing regulations. (Photo: Jim Allen/FreightWaves)

WASHINGTON — The U.S. Department of Health and Human Services plans to issue in October revised mandatory guidelines for testing hair under drug programs used at federal agencies, including the Federal Motor Carrier Safety Administration.

The new date for the revised guidelines, in the form of a supplemental Notice of Proposed Rulemaking, marks the third time it has been pushed back on HHS’s regulatory agenda after originally scheduled to be issued in June 2023.

“There are a number of reasons why the timeline for a particular regulatory or deregulatory action may shift,” FMCSA told FreightWaves previously, including additional time for research, analysis, and public engagement.

While moving from HHS guidelines to an FMCSA final rule could take months or years, the guidelines, if approved, would mark a major step toward potential mandatory hair testing of truck drivers.

Using hair to test for drugs is supported by the American Trucking Associations and is used by major trucking companies to screen their prospective employee drivers, including J.B. Hunt Transport (NASDAQ: JBHT) and Knight-Swift Transportation (NYSE: KNX).

A first attempt at mandatory guidelines issued in 2020 by the first Trump administration was not well received.

Large carriers argued that requiring an alternative urine or saliva sample as backup to any positive hair tests – stipulated in the 2020 proposal – rendered the guidelines ineffective, particularly for preemployment screening.

The detection window for drugs in urine and saliva tends to be much shorter than for hair samples, they argued, which could lead to both positive and negative test samples from the same donor.

The Owner-Operator Independent Drivers Association opposed the 2020 attempt at the guidelines as intrusive and discriminatory, and remains opposed to any hair-testing mandate initiated by HHS or Congress. OOIDA is particularly concerned about a bill introduced in July that would require FMCSA to accept positive hair drug test results into the agency’s Drug and Alcohol Clearinghouse.

“This legislation would set a dangerous precedent by bypassing necessary technical feedback from HHS needed to answer critical questions about the accuracy of these tests,” the group told the U.S. Department of Transportation in comments filed earlier this month.

Click for more FreightWaves articles by John Gallagher.

Upcoming FreightWaves Events
AI

Supply Chain AI Symposium

Past the hype. Join operators, founders, and enterprise leaders figuring out how to deploy AI in supply chain.

July 15, 2026
The Old Post • Chicago, IL
Register Now
FreightTech

F3: Future of Freight Festival

Industry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.

October 27, 2026 – October 28, 2026
The Signal at Chattanooga Choo Choo • Chattanooga, TN
Register Now
AI Supply Chain AI Symposium Jul 15 • The Old Post • Chicago, IL

Past the hype. Join operators, founders, and enterprise leaders figuring out how to deploy AI in supply chain.

The Old Post • Chicago, IL Register Now
FreightTech F3: Future of Freight Festival Oct 27 – Oct 28 • The Signal at Chattanooga Choo Choo • Chattanooga, TN

Industry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.

The Signal at Chattanooga Choo Choo • Chattanooga, TN Register Now

John Gallagher

Based in Washington, D.C., John specializes in regulation and legislation affecting all sectors of freight transportation. He has covered rail, trucking and maritime issues since 1993 for a variety of publications based in the U.S. and the U.K. John began business reporting in 1993 at Broadcasting & Cable Magazine. He graduated from Florida State University majoring in English and business.