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SECTION 1: DOT 49 CFR Part 40 Regulations — Questions 1-25
Q1. Under 49 CFR Part 40, what is the responsibility of the Medical Review
Officer (MRO) when a laboratory reports a positive test result?
A. To immediately contact law enforcement.
B. To forward the result directly to the employee's supervisor.
C. To verify the result with the donor to determine if there is a legitimate medical
explanation.
D. To destroy the specimen to maintain privacy.
Correct Answer: C
RatiOnale: The MRO's primary role is to act as an independent gatekeeper to
ensure the accuracy of the drug test result. Before reporting a positive to the
employer, the MRO must conduct a medical interview with the donor to verify if
there is a legitimate medical explanation, such as a valid prescription.
Contacting law enforcement (A) is not the MRO's role, and reporting to the
supervisor (B) must wait until verification is complete. Destroying the specimen
(D) would violate record-keeping requirements.
Q2. Which federal agency issues the mandatory guidelines for Federal
Workplace Drug Testing Programs that the MRO must follow in addition to DOT
regulations?
A. Food and Drug Administration (FDA).
B. Occupational Safety and Health Administration (OSHA).
, C. Substance Abuse and Mental Health Services Administration (SAMHSA).
D. Drug Enforcement Administration (DEA).
Correct Answer: C
RatiOnale: SAMHSA issues the Mandatory Guidelines for Federal Workplace
Drug Testing Programs, which establish standards for laboratory certification,
specimen collection, and testing procedures. MROs must follow both DOT 49
CFR Part 40 and SAMHSA guidelines. FDA (A) regulates pharmaceuticals, not
workplace drug testing. OSHA (B) handles workplace safety. DEA (D) controls
controlled substances scheduling but does not issue workplace testing
guidelines.
Q3. An MRO receives a verified positive test result for a DOT-covered employee.
Within what timeframe must the MRO report the result to the employer's
designated employer representative (DER)?
A. Immediately after verification, no later than 24 hours
B. Within 5 business days
C. Within 30 days
D. Only after the employee signs a release form
Correct Answer: A
RatiOnale: Under 49 CFR Part 40.127(a), once the MRO has verified a test as
positive, adulterated, substituted, or refused, the MRO must report the result to
the DER as soon as possible, typically within 24 hours or immediately after
verification. Delays beyond 24 hours are not permitted. The employee does not
need to sign a release (D) for this reporting.
Q4. During the MRO verification interview, the employee presents a valid
prescription for a Schedule II controlled substance. The prescription was filled
Style QueStiOnS with DetaileD RatiOnaleS | 100% VeRifieD | PaSS
GuaRanteeD – a+ GRaDeD
SECTION 1: DOT 49 CFR Part 40 Regulations — Questions 1-25
Q1. Under 49 CFR Part 40, what is the responsibility of the Medical Review
Officer (MRO) when a laboratory reports a positive test result?
A. To immediately contact law enforcement.
B. To forward the result directly to the employee's supervisor.
C. To verify the result with the donor to determine if there is a legitimate medical
explanation.
D. To destroy the specimen to maintain privacy.
Correct Answer: C
RatiOnale: The MRO's primary role is to act as an independent gatekeeper to
ensure the accuracy of the drug test result. Before reporting a positive to the
employer, the MRO must conduct a medical interview with the donor to verify if
there is a legitimate medical explanation, such as a valid prescription.
Contacting law enforcement (A) is not the MRO's role, and reporting to the
supervisor (B) must wait until verification is complete. Destroying the specimen
(D) would violate record-keeping requirements.
Q2. Which federal agency issues the mandatory guidelines for Federal
Workplace Drug Testing Programs that the MRO must follow in addition to DOT
regulations?
A. Food and Drug Administration (FDA).
B. Occupational Safety and Health Administration (OSHA).
, C. Substance Abuse and Mental Health Services Administration (SAMHSA).
D. Drug Enforcement Administration (DEA).
Correct Answer: C
RatiOnale: SAMHSA issues the Mandatory Guidelines for Federal Workplace
Drug Testing Programs, which establish standards for laboratory certification,
specimen collection, and testing procedures. MROs must follow both DOT 49
CFR Part 40 and SAMHSA guidelines. FDA (A) regulates pharmaceuticals, not
workplace drug testing. OSHA (B) handles workplace safety. DEA (D) controls
controlled substances scheduling but does not issue workplace testing
guidelines.
Q3. An MRO receives a verified positive test result for a DOT-covered employee.
Within what timeframe must the MRO report the result to the employer's
designated employer representative (DER)?
A. Immediately after verification, no later than 24 hours
B. Within 5 business days
C. Within 30 days
D. Only after the employee signs a release form
Correct Answer: A
RatiOnale: Under 49 CFR Part 40.127(a), once the MRO has verified a test as
positive, adulterated, substituted, or refused, the MRO must report the result to
the DER as soon as possible, typically within 24 hours or immediately after
verification. Delays beyond 24 hours are not permitted. The employee does not
need to sign a release (D) for this reporting.
Q4. During the MRO verification interview, the employee presents a valid
prescription for a Schedule II controlled substance. The prescription was filled
