MEDICAL REVIEW OFFICER (MRO)
EXAMINATION COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
Exam Coverage Summary
1. MRO Role and Responsibilities — Understand the MRO's independent medical review
duties, verification responsibilities, and relationship with employers, laboratories,
collectors, and employees.
2. Federal Workplace Drug-Testing Regulations — Know the regulatory framework
governing federally regulated workplace drug testing, including applicable testing
procedures and MRO obligations.
3. Specimen Validity Testing — Interpret laboratory findings involving negative, positive,
adulterated, substituted, and invalid specimens.
4. Medical Review and Verification — Apply appropriate procedures for reviewing
laboratory-confirmed results and determining whether a legitimate medical explanation
exists.
5. Prescription and Over-the-Counter Medications — Evaluate medication use and
determine when prescribed drugs may explain a laboratory-confirmed result.
6. Drug Classes and Metabolism — Recognize commonly tested substances, metabolites,
pharmacology, and potential legitimate sources of detected analytes.
7. MRO Interviews and Documentation — Conduct effective, confidential interviews while
maintaining accurate records and appropriate documentation.
8. Split Specimens and Retesting — Understand employee rights and MRO responsibilities
involving split-specimen testing and reconfirmation.
9. Confidentiality and Reporting — Apply privacy, communication, reporting, and
recordkeeping requirements appropriately.
10.Complex and Special Circumstances — Address safety-sensitive employees, refusals,
medical explanations, invalid results, shy bladder situations, and other challenging MRO
cases.
,1. Which statement best describes the primary professional responsibility of a
Medical Review Officer when reviewing federally regulated workplace drug-
testing results?
A. To determine whether an employee should be terminated immediately
B. To independently review laboratory results and determine whether a
legitimate medical explanation exists
C. To collect every urine specimen personally from employees
D. To prescribe medications that prevent positive drug-test results
Answer: B
Rationale: The MRO independently evaluates laboratory-confirmed results and
relevant medical information to determine whether a legitimate medical
explanation exists. The MRO does not make employment decisions or prescribe
medications.
2. Why is the Medical Review Officer required to maintain independence when
evaluating a laboratory-confirmed positive drug-test result?
A. Independence ensures employment decisions are based exclusively on the
MRO's personal preferences
B. Independence prevents the laboratory from performing any required testing
procedures
C. Independence supports an objective medical determination without
inappropriate influence from interested parties
D. Independence allows the MRO to disregard federal testing requirements when
medically convenient
Answer: C
Rationale: The MRO must make an impartial medical determination based on
laboratory findings and legitimate medical information, rather than employer,
employee, or laboratory pressure.
,3. When a laboratory reports a confirmed positive drug-test result, what should
generally occur before the MRO verifies the result as positive?
A. The employee must automatically be terminated
B. The MRO must provide an opportunity for the employee to provide a
legitimate medical explanation
C. The collector must personally diagnose the employee
D. The employer must decide whether the result is medically valid
Answer: B
Rationale: The MRO reviews the result and contacts the employee as required,
giving the employee an opportunity to provide relevant medical information that
could explain the finding.
4. Which laboratory finding most directly indicates that a urine specimen may
contain an added substance intended to interfere with drug testing?
A. Negative result
B. Adulterated specimen
C. Normal creatinine concentration
D. Confirmed negative result
Answer: B
Rationale: An adulterated specimen contains a substance that is not normally
present in urine or is present at an abnormal concentration and may interfere
with the testing process.
, 5. What is the principal purpose of specimen validity testing performed by an
authorized laboratory during urine drug testing?
A. To determine whether the employee has a medical diagnosis
B. To assess whether the specimen's characteristics are consistent with normal
human urine
C. To identify the employee's prescription medications automatically
D. To determine whether the employee should be promoted
Answer: B
Rationale: Specimen validity testing evaluates characteristics such as creatinine,
specific gravity, pH, and adulterant indicators to identify possible substitution,
dilution, or adulteration.
6. A laboratory reports a urine specimen as substituted based on applicable
validity criteria. What is the MRO generally expected to do?
A. Automatically classify the employee as drug-free
B. Review the result according to applicable procedures and determine the
appropriate verification outcome
C. Ignore the laboratory's validity findings
D. Change the result to negative whenever the employee denies drug use
Answer: B
Rationale: A substituted result requires appropriate MRO review and verification
under applicable regulations. The employee's denial alone does not automatically
change the laboratory finding.
7. Why does the MRO review prescription medication information when
evaluating certain confirmed drug-test results?
EXAMINATION COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS
YEAR JUST RELEASED
Exam Coverage Summary
1. MRO Role and Responsibilities — Understand the MRO's independent medical review
duties, verification responsibilities, and relationship with employers, laboratories,
collectors, and employees.
2. Federal Workplace Drug-Testing Regulations — Know the regulatory framework
governing federally regulated workplace drug testing, including applicable testing
procedures and MRO obligations.
3. Specimen Validity Testing — Interpret laboratory findings involving negative, positive,
adulterated, substituted, and invalid specimens.
4. Medical Review and Verification — Apply appropriate procedures for reviewing
laboratory-confirmed results and determining whether a legitimate medical explanation
exists.
5. Prescription and Over-the-Counter Medications — Evaluate medication use and
determine when prescribed drugs may explain a laboratory-confirmed result.
6. Drug Classes and Metabolism — Recognize commonly tested substances, metabolites,
pharmacology, and potential legitimate sources of detected analytes.
7. MRO Interviews and Documentation — Conduct effective, confidential interviews while
maintaining accurate records and appropriate documentation.
8. Split Specimens and Retesting — Understand employee rights and MRO responsibilities
involving split-specimen testing and reconfirmation.
9. Confidentiality and Reporting — Apply privacy, communication, reporting, and
recordkeeping requirements appropriately.
10.Complex and Special Circumstances — Address safety-sensitive employees, refusals,
medical explanations, invalid results, shy bladder situations, and other challenging MRO
cases.
,1. Which statement best describes the primary professional responsibility of a
Medical Review Officer when reviewing federally regulated workplace drug-
testing results?
A. To determine whether an employee should be terminated immediately
B. To independently review laboratory results and determine whether a
legitimate medical explanation exists
C. To collect every urine specimen personally from employees
D. To prescribe medications that prevent positive drug-test results
Answer: B
Rationale: The MRO independently evaluates laboratory-confirmed results and
relevant medical information to determine whether a legitimate medical
explanation exists. The MRO does not make employment decisions or prescribe
medications.
2. Why is the Medical Review Officer required to maintain independence when
evaluating a laboratory-confirmed positive drug-test result?
A. Independence ensures employment decisions are based exclusively on the
MRO's personal preferences
B. Independence prevents the laboratory from performing any required testing
procedures
C. Independence supports an objective medical determination without
inappropriate influence from interested parties
D. Independence allows the MRO to disregard federal testing requirements when
medically convenient
Answer: C
Rationale: The MRO must make an impartial medical determination based on
laboratory findings and legitimate medical information, rather than employer,
employee, or laboratory pressure.
,3. When a laboratory reports a confirmed positive drug-test result, what should
generally occur before the MRO verifies the result as positive?
A. The employee must automatically be terminated
B. The MRO must provide an opportunity for the employee to provide a
legitimate medical explanation
C. The collector must personally diagnose the employee
D. The employer must decide whether the result is medically valid
Answer: B
Rationale: The MRO reviews the result and contacts the employee as required,
giving the employee an opportunity to provide relevant medical information that
could explain the finding.
4. Which laboratory finding most directly indicates that a urine specimen may
contain an added substance intended to interfere with drug testing?
A. Negative result
B. Adulterated specimen
C. Normal creatinine concentration
D. Confirmed negative result
Answer: B
Rationale: An adulterated specimen contains a substance that is not normally
present in urine or is present at an abnormal concentration and may interfere
with the testing process.
, 5. What is the principal purpose of specimen validity testing performed by an
authorized laboratory during urine drug testing?
A. To determine whether the employee has a medical diagnosis
B. To assess whether the specimen's characteristics are consistent with normal
human urine
C. To identify the employee's prescription medications automatically
D. To determine whether the employee should be promoted
Answer: B
Rationale: Specimen validity testing evaluates characteristics such as creatinine,
specific gravity, pH, and adulterant indicators to identify possible substitution,
dilution, or adulteration.
6. A laboratory reports a urine specimen as substituted based on applicable
validity criteria. What is the MRO generally expected to do?
A. Automatically classify the employee as drug-free
B. Review the result according to applicable procedures and determine the
appropriate verification outcome
C. Ignore the laboratory's validity findings
D. Change the result to negative whenever the employee denies drug use
Answer: B
Rationale: A substituted result requires appropriate MRO review and verification
under applicable regulations. The employee's denial alone does not automatically
change the laboratory finding.
7. Why does the MRO review prescription medication information when
evaluating certain confirmed drug-test results?
