MEDICAL CERTIFICATION
MRO PRACTICE QUESTIONS WITH COMPLETE
SOLUTIONS!!
A+
Complete Blueprint Coverage
A+ 5 100%
QUESTIONS VERIFIED EXAM DOMAINS COVERED RATIONALES INCLUDED
CATEGORIES
Regulatory Framework & MRO Role
Specimen Collection, Chain of Custody & Validity
Laboratory Analysis, Toxicology & Pharmacology
Result Interpretation, Medical Explanations & Interviews
Reporting, Return-to-Duty, Confidentiality & Program Management
STUVIAACTUALEXAM
,
, MRO PRACTICE QUESTIONS WITH COMPLETE SOLUTIONS!! 2026/2027
SECTION 1: REGULATORY FRAMEWORK & MRO ROLE
Q1.
A physician who wishes to serve as an MRO for DOT-regulated employers has completed medical school and holds an
unrestricted license. Before acting as an MRO, what additional requirement must be met under 49 CFR Part 40?
A. Only a current medical license is required; no further training is needed.
B. The physician must complete qualification training covering collection procedures, chain of custody, result interpretation,
MRO role, and applicable regulations, and then pass an examination administered by a nationally recognized MRO
certification board.
C. The physician must complete a one-hour online module on general workplace safety.
D. The physician may begin reviewing results immediately if supervised by any other physician.
Correct Answer: B
Rationale:
Part 40 requires specific qualification training on the listed subjects followed by a comprehensive examination from a recognized
MRO certification board. A medical license alone is insufficient.
Q2.
An MRO receives a laboratory report for a DOT urine test. The MRO's primary responsibility in the initial review is to
determine which of the following?
A. Whether the employer's policy is more stringent than DOT rules.
B. Whether there is a legitimate medical explanation for a laboratory-confirmed positive, adulterated, substituted, or invalid
result.
C. Whether the donor should be terminated from employment.
D. Whether the collection site charged the correct fee.
Correct Answer: B
Rationale:
The MRO's core function is to review laboratory results and determine if a legitimate medical explanation exists before verifying the
result to the employer. Employment decisions and fee disputes are outside that role.
Q3.
A Designated Employer Representative (DER) contacts the MRO asking for the specific quantitative drug levels from a
verified positive test so the company can decide on progressive discipline. How should the MRO respond?
A. Provide the quantitative values because the DER is entitled to all laboratory data.
B. Release only the verified result (e.g., positive for the drug class) as required; quantitative values are generally not
released to the employer under DOT rules.
C. Refuse to speak with the DER under any circumstances.
D. Send the entire laboratory package including chain-of-custody forms to the DER.
Correct Answer: B
Rationale:
DOT rules limit what the MRO reports to the employer. The verified result is reported; quantitative levels are not routinely provided
for employment decision-making.
MRO PRACTICE QUESTIONS WITH COMPLETE
SOLUTIONS!!
A+
Complete Blueprint Coverage
A+ 5 100%
QUESTIONS VERIFIED EXAM DOMAINS COVERED RATIONALES INCLUDED
CATEGORIES
Regulatory Framework & MRO Role
Specimen Collection, Chain of Custody & Validity
Laboratory Analysis, Toxicology & Pharmacology
Result Interpretation, Medical Explanations & Interviews
Reporting, Return-to-Duty, Confidentiality & Program Management
STUVIAACTUALEXAM
,
, MRO PRACTICE QUESTIONS WITH COMPLETE SOLUTIONS!! 2026/2027
SECTION 1: REGULATORY FRAMEWORK & MRO ROLE
Q1.
A physician who wishes to serve as an MRO for DOT-regulated employers has completed medical school and holds an
unrestricted license. Before acting as an MRO, what additional requirement must be met under 49 CFR Part 40?
A. Only a current medical license is required; no further training is needed.
B. The physician must complete qualification training covering collection procedures, chain of custody, result interpretation,
MRO role, and applicable regulations, and then pass an examination administered by a nationally recognized MRO
certification board.
C. The physician must complete a one-hour online module on general workplace safety.
D. The physician may begin reviewing results immediately if supervised by any other physician.
Correct Answer: B
Rationale:
Part 40 requires specific qualification training on the listed subjects followed by a comprehensive examination from a recognized
MRO certification board. A medical license alone is insufficient.
Q2.
An MRO receives a laboratory report for a DOT urine test. The MRO's primary responsibility in the initial review is to
determine which of the following?
A. Whether the employer's policy is more stringent than DOT rules.
B. Whether there is a legitimate medical explanation for a laboratory-confirmed positive, adulterated, substituted, or invalid
result.
C. Whether the donor should be terminated from employment.
D. Whether the collection site charged the correct fee.
Correct Answer: B
Rationale:
The MRO's core function is to review laboratory results and determine if a legitimate medical explanation exists before verifying the
result to the employer. Employment decisions and fee disputes are outside that role.
Q3.
A Designated Employer Representative (DER) contacts the MRO asking for the specific quantitative drug levels from a
verified positive test so the company can decide on progressive discipline. How should the MRO respond?
A. Provide the quantitative values because the DER is entitled to all laboratory data.
B. Release only the verified result (e.g., positive for the drug class) as required; quantitative values are generally not
released to the employer under DOT rules.
C. Refuse to speak with the DER under any circumstances.
D. Send the entire laboratory package including chain-of-custody forms to the DER.
Correct Answer: B
Rationale:
DOT rules limit what the MRO reports to the employer. The verified result is reported; quantitative levels are not routinely provided
for employment decision-making.
