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DOT Rule 49 CFR Part 40 Section 40.135
Subpart G - Medical Review Officers and the Verification Process § 40.135 What does the MRO tell the employee at the beginning of the verification interview? (a) As the MRO, you must tell the employee that the laboratory has determined that the employee's test result was positive,...DOT Rule 49 CFR Part 40 Section 40.133
Subpart G - Medical Review Officers and the Verification Process§ 40.133 Without interviewing the employee, under what circumstances may the MRO verify a test result as positive, or as a refusal to test because of adulteration or substitution, or as cancelled because the test was invalid? (a)...DOT Rule 49 CFR Part 40 Section 40.131 Q&A
§40.131 ...DOT Rule 49 CFR Part 40 Section 40.131
Subpart G - Medical Review Officers and the Verification Process§ 40.131 How does the MRO or DER notify an employee of the verification process after receiving laboratory confirmed non-negative drug test results?(a) When, as the MRO, you receive a confirmed positive, adulterated, substituted...DOT Rule 49 CFR Part 40 Section 40.129
Subpart G - Medical Review Officers and the Verification Process § 40.129 What are the MRO's functions in reviewing laboratory confirmed non-negative drug test results? (a) As the MRO, you must do the following with respect to confirmed positive, adulterated, substituted, or invalid results...DOT Rule 49 CFR Part 40 Section 40.127 Q&A
§40.127 ...DOT Rule 49 CFR Part 40 Section 40.127
Subpart G - Medical Review Officers and the Verification Process§ 40.127 What are the MRO's functions in reviewing negative test results?
As the MRO, you must do the following with respect to negative drug test results you receive from a laboratory, prior to verifying the result...