Study finds hair test 14.2 times more likely to spot drugs than urinalysis

Study finds hair test 14.2 times more likely to spot drugs than urinalysis

WASHINGTON — A University of Central Arkansas (UCA) study has concluded that a recent survey of 151,662 truck drivers’ paired urine and hair drug screenings, in which 12,824 failed the hair test, “can be generalized across the national driver population.”

Based on this study, 310,250 truck drivers would fail a hair test for illicit drug and opioid use.

That number is based on the U.S. Bureau of Labor Statistics figure that there are 3.3 million employed truck drivers and the Owner-Operator Independent Driver Association estimate that there are 350,000 owner-operators.

Broken down by segment, the Labor Department says there are 915,320 light truck or delivery services drivers, 1,800,320 heavy and tractor-trailer truck drivers and 604,100 industrial truck and tractor operators.

The Trucking Alliance, an industry-based safety coalition of freight transportation, logistics and supporting businesses that adopt specific operating standards, recently conducted a survey of 15 trucking companies that utilize a pre-employment hair test when hiring commercial truck drivers, along with the federally required urine test.

To compare the results, the companies submitted paired drug and urine test results of 151,662 truck driver applicants.

The test results indicated a major discrepancy between the number of drivers who failed a urinalysis drug screen and those who failed a hair test.

While 949 (0.6%) applicants failed the urine test, 12,824 (8.5%) either failed or refused to submit to a hair test.

The U.S. Department of Transportation classifies refusals to submit to a drug or alcohol screening as a failure.

This yielded a hair test failure rate 14.2 times greater than with the urine test.

Cocaine was the most prevalent drug, followed by opioids, including heroin.

Marijuana was the third-most widely detected drug.

All of these drugs are prohibited by federal law and automatically disqualify persons with a commercial driver license from operating a commercial truck.

Proponents of hair testing have been pushing for several years to have the Department of Transportation recognize hair testing as a viable tool in screening out substance abusers who might seek a job driving a big rig.

The FAST Act highway bill of 2015 had required the Department of Health and Human Services to issue scientific and technical guidelines for hair testing by December 2016, but that deadline was missed.

Then in October 2018, President Donald Trump signed a bill that required HHS to report progress on hair testing within 30 days of passage and laid out a schedule, including benchmarks, for completion of hair testing guidelines.

The guidelines would be applicable to all federal agencies, not just the DOT.

Sources told The Trucker that a draft of guidelines has been written and sent to the Office of Management and Budget (in essence, the White House) for review.

Feedback from OMB said the guidelines were too broad and unenforceable, the source said.

As for its study, the Trucking Alliance asked the UCA College of Business to analyze the survey and determine if the test results could be applied, with accuracy, to the national U.S. truck driver population.

The UCA study, titled, “An Examination of the Geographical Correlation Between Commercial Motor Vehicle Drivers,” concluded:

  • The Trucking Alliance sample is large enough to draw inferences to the national driver population, with a 99% confidence level and a margin of error of less than 1%.
  • The Trucking Alliance sample is representative of the national truck driver population.
  • The Trucking Alliance urine vs. hair test results can be generalized across the national driver population.

“We now have clear evidence that hundreds of thousands of drug-impaired truck drivers are skirting the current drug test system and creating a dangerous public safety risk,” said Lane Kidd, managing director of the Trucking Alliance.

The Trucking Alliance says it supports reforms that can improve the safety and security of commercial drivers, reduce large-truck accidents, and eventually eliminate all large-truck crash fatalities.

Member companies collectively employ 82,000 professional drivers, logistics and management personnel, and contract with thousands of independent owner-operators to serve their respective supply chain networks. These companies operate approximately 70,000 large tractors, and more than 220,000 semitrailers and intermodal containers.

Members of the Trucking Alliance include Cargo Transporters, Dupré Logistics, J.B. Hunt Transport, KLLM Transport Services, Knight-Swift Transportation, Maverick USA, May Trucking Company and US Xpress.

UCA is located in Conway, Arkansas.

The Trucker News Staff produces engaging content for not only, but also The Trucker Newspaper, which has been serving the trucking industry for more than 30 years. With a focus on drivers, the Trucker News Staff aims to provide relevant, objective content pertaining to the trucking segment of the transportation industry. The Trucker News Staff is based in Little Rock, Arkansas.
For over 30 years, the objective of The Trucker editorial team has been to produce content focused on truck drivers that is relevant, objective and engaging. After reading this article, feel free to leave a comment about this article or the topics covered in this article for the author or the other readers to enjoy. Let them know what you think! We always enjoy hearing from our readers.

Study finds hair test 14.2 times more likely to spot drugs than urinalysis


Hair follicle testing is great but what about people who had major dental work done within the last couple months will it show drugs in their system and will they fail because of dental work being done ?