The importance of the split specimen in drug testing
A question we’ve been seeing a lot lately has to do with the split specimen process and the motor carrier’s responsibilities if one of their drivers requests that a split specimen be tested.
Drivers who are informed that they’ve failed a DOT drug test have the right to request that the secondary specimen be tested if they believe that the test result is inaccurate. Due process is an important aspect of our legal system, but waiting for a split specimen to be tested can cause some confusion for motor carriers. Here are some common questions we hear about the split specimen process.
What is a split specimen?
When a driver gives a urine sample for the purposes of DOT drug testing, the collector will split the specimen into two separate containers. The container labeled as the primary specimen will be tested by the lab; the container labeled as the secondary specimen is only tested if the driver requests that it be tested after the primary specimen is verified as positive, adulterated, or substituted.
How does a driver request that the split specimen be tested?
When the medical review officer (MRO) contacts the driver about a verified positive, adulterated, or substituted test, the MRO will inform the driver of the driver’s right to have the split specimen tested. The driver then has 72 hours from the time of notification to request via the MRO that the split specimen be tested.
What happens while the split specimen is being tested?
Because the driver’s primary specimen was verified positive, adulterated, or substituted, the motor carrier should have already pulled the driver from performing safety-sensitive functions. The driver cannot resume driving while the split specimen is being tested. Whether the driver is reassigned to a non-driving position or is suspended depends on the motor carrier’s drug and alcohol policy.
Who pays for the split specimen to be tested?
The regulations specify that the carrier cannot delay lab testing in order to collect payment from the driver. The secondary specimen should be submitted for testing as soon as the driver requests it, and motor carrier will be billed through the carrier’s lab account. In some cases, the motor carrier can seek reimbursement from the driver for full or partial costs of the split-specimen test.
Is the drug violation reported to the Drug and Alcohol Clearinghouse right away, or does the MRO wait for the results of the test on the secondary sample?
The MRO will report the positive, adulterated, or substituted drug test result to the Drug and Alcohol Clearinghouse within two business days of verifying the result for the primary specimen. Once the MRO receives the lab results for the secondary sample, one of three things happens:
- The secondary test result reconfirms the primary test result. The violation stands and remains in the Clearinghouse.
- The test of the secondary sample fails to reconfirm any of the original findings. The test will be canceled, and the MRO will change the result in the Clearinghouse within one business day of receiving the secondary test results.
- The test of the split specimen does not reconfirm the original result but identifies something suspicious in the secondary sample. The regulations in 40.187 spell out a variety of situations that require the driver to be tested again, such as if the secondary sample is invalid or if part of the original result is reconfirmed but the sample also tests as substituted or adulterated. If any of these complex scenarios applies, the MRO will direct the carrier’s designated employer representative (DER) to immediately send the driver for another collection under direct observation. If that test result is negative and is not adulterated or substituted, the MRO will change the result in the Clearinghouse within one business day of receiving the secondary test results. Otherwise, the violation will stand and remain in the Clearinghouse.
Key to remember: Dividing a urine specimen into two samples allows for a driver to request that the secondary sample be tested if the first specimen indicates drug use. This is an important part of the driver’s right to due process.