Frequently Asked Questions
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Clear allCan an MRO Report Marijuana Positive as Negative for State-Legal Use?
No. An MRO cannot report a lab-confirmed marijuana positive as negative for state-licensed use. State medical cards and dispensary records do not meet 49 CFR 40.137(a), and state marijuana is not FDA-approved.
Read moreWhat Does MRO Stand for in Drug Testing?
MRO stands for Medical Review Officer, a licensed physician with specialized training who reviews lab results, contacts donors about legitimate medical explanations, and issues the final result.
Read moreIs Quest Diagnostics' Free Collector Training Enough for DOT Qualification?
No. Quest states that its free online modules and completion certificate do not meet the requirements for DOT collector qualification. 49 CFR 40.33 also requires five consecutive error-free mock collections.
Read moreWho Can Monitor DOT Mock Collections for Collectors and Alcohol Technicians?
Part 40 allows three paths for mock monitors, such as a qualified collector who has done DOT collections for at least one year. The monitor attests in writing that the five mocks were error-free.
Read moreWhat Happens When a Collector Error Cancels a DOT Drug Test?
Under 49 CFR 40.207(a), a cancelled DOT test is neither positive nor negative. It does not clear an employee for safety-sensitive work and does not count toward the random testing rate.
Read moreIs Free Lab or Vendor Collector Training Enough for DOT Qualification?
No. Free vendor modules can be product training, but DOT collector qualification under 49 CFR 40.33 requires qualification training, five error-free mock collections and refresher training every five years.
Read moreHow Can an Organization Build an In-House DOT Collection Program?
Yes, if the program meets the same Part 40 rules as any collection site. Collectors must meet 49 CFR 40.33 with training and five error-free mocks, and refresher training is required every five years.
Read moreWhat Are TPA and C/TPA Responsibilities for DOT Collector Qualification?
The employer stays responsible for Part 40 compliance even when it uses a C/TPA (49 CFR 40.15). Under 40.33(g), collectors must keep documentation of their qualifications and give it to C/TPAs on request.
Read moreIs Free Reasonable Suspicion Training Enough for DOT Supervisors?
It depends on the DOT mode. FMCSA (49 CFR 382.603) requires at least 60 minutes on alcohol misuse and 60 more on controlled substances, so shorter free sessions do not qualify. Keep a completion record.
Read moreDo Organizations Need Device-Maker BAT Training for DOT Alcohol Testing?
No. Device-maker courses are one way to meet 49 CFR 40.213, not the only way. BATs need seven consecutive error-free mock tests and STTs need five, using the devices they will use on the job.
Read moreWhat Do Collection Sites Need to Know About the 2026 Federal CCF?
The revised 2026 Federal CCF took effect April 27, 2026. The 2023 CCF may be used until May 31, 2027, and from then on an MFR must be completed if it is used (49 CFR 40.205(b)(2)).
Read moreIs a Qualified Urine Collector Also Qualified for DOT Oral Fluid Collections?
No. DOT treats urine collector qualification (49 CFR 40.33) and oral fluid qualification (40.35) as separate. A urine collector still needs oral fluid training and proficiency demonstrations.
Read moreWhat Counts as a Refusal to Take a DOT Drug Test?
49 CFR 40.191 lists refusals, including failing to appear, failing to remain at the site, failing to provide a specimen, failing to cooperate, and admitting to adulterating or substituting a specimen.
Read moreWhat Is the FMCSA Drug and Alcohol Clearinghouse?
It is a secure online database where employers, FMCSA and state agencies see drug and alcohol violations by CDL and CLP holders, including positive tests, refusals, and return-to-duty and follow-up information.
Read moreWhen Is an FMCSA Pre-employment Drug Test Required?
A driver needs a verified negative controlled substances result before first performing safety-sensitive functions (49 CFR 382.301). A limited exception applies, and pre-employment alcohol testing is optional.
Read moreHow Does Oral Fluid Drug Testing Compare with Urine Testing?
HHS publishes separate guidelines for urine and oral fluid, and DOT added oral fluid to Part 40 in 2023. Collection differs: urine is at least 45 mL, while oral fluid bottles hold at least 1 mL each.
Read moreWhat Is Chain of Custody in Drug Testing?
Chain of custody is the documented record of who handled a specimen and when, kept on the Federal CCF from collection until the specimen is destroyed (49 CFR 40.3).
Read moreDoes HIPAA Apply to Drug Test Results?
Usually not. HIPAA covers health plans, clearinghouses and providers, not employers acting as employers. A covered provider's drug test result can be protected health information.
Read moreWhat Do DOT Employee Assistance Program Rules Require?
FAA (14 CFR 120.115), PHMSA (49 CFR 199.113) and the Coast Guard (46 CFR 16.401) require an EAP. Employers can run it internally or contract it out, and must provide education and training on drug use.
Read moreWhat Does a Drug-Free Workplace Program Include?
SAMHSA says most successful programs have five parts: a written policy, employee education, supervisor training, drug testing, and an Employee Assistance Program (EAP).
Read moreWhat Drug Testing Do USCG Rules Require for Crewmembers?
Coast Guard crewmember testing is under 46 CFR Part 16. It follows 49 CFR Part 40, uses HHS-certified labs, and includes pre-employment testing, which the employer may waive if a recent required test was passed.
Read moreWhich Railroad Employees Are Covered by FRA Drug and Alcohol Rules?
49 CFR Part 219 covers railroads and their contractors. It applies to regulated employees: covered employees performing covered service, plus maintenance-of-way and mechanical employees.
Read moreWhat Is FRA Post-Accident Toxicological Testing?
It is blood and urine testing by FRA under 49 CFR Part 219 Subpart C for regulated employees involved in a qualifying accident. Specimens go to FRA using Form FRA 6180.73, and FRA testing takes priority.
Read moreHow Do FRA Peer Support and Self-Referral Programs Work?
Under 49 CFR Part 219 Subpart K, railroads adopt a self-referral program and a co-worker referral program. Employees can seek counseling or treatment from a Drug and Alcohol Counselor before a violation is detected.
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