Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Regulations

Legacy ID
2356

DOT Rule 49 CFR Part 40 Section 40.177

Subpart H - Split Specimen Tests § 40.177 What does the second laboratory do with the split specimen when it is tested to reconfirm the presence of a drug or drug metabolite?   (a) As the laboratory testing the split specimen, you must test the split specimen for the drug(s)/drug...

DOT Rule 49 CFR Part 40 Section 40.175

Subpart H - Split Specimen Tests§ 40.175 What steps does the first laboratory take with a split specimen? (a) As the laboratory at which the primary and split specimen first arrive, you must check to see whether the split specimen is available for testing. (b) If the split specimen is...

DOT Rule 49 CFR Part 40 Section 40.173

Subpart H - Split Specimen Tests§ 40.173 Who is responsible for paying for the test of a split specimen? (a) As the employer, you are responsible for making sure (e.g., by establishing appropriate accounts with laboratories for testing split specimens) that the MRO, first laboratory, and...

Facilitator

Richard W. Parker

Professor Parker teaches and writes in the fields of administrative law and domestic and international environmental law at the University of Connecticut School of Law.  His scholarship focuses on understanding -- and exploring ways to strengthen -- both domestic and...

DOT Rule 49 CFR Part 40 Section 40.171

Subpart H - Split Specimen Tests

§ 40.171 How does an employee request a test of a split specimen?

(a) As an employee, when the MRO has notified you that you have a verified positive drug test and/or refusal to test because of adulteration or substitution, you have 72 hours from the time of...

DOT Rule 49 CFR Part 40 Section 40.165

Subpart G - Medical Review Officers and the Verification Process

§ 40.165 To whom does the MRO transmit reports of drug test results?

(a) As the MRO, you must report all drug test results to the DER, except in the circumstances provided for in §40.345 .

(b) If the employer...

DOT Rule 49 CFR Part 40 Section 40.163

Subpart G - Medical Review Officers and the Verification Process

§ 40.163 How does the MRO report drug test results?

(a) As the MRO, it is your responsibility to report all drug test results to the employer.

(b) You may use a signed or stamped and dated legible photocopy...

DOT Rule 49 CFR Part 40 Section 40.162

Subpart G - Medical Review Officers and the Verification Process§ 40.162 What must MROs do with multiple verified results for the same testing event? (a) If the testing event is one in which there was one specimen collection with multiple verified non-negative results, as the MRO, you must...

DOT Rule 49 CFR Part 40 Section 40.161

Subpart G - Medical Review Officers and the Verification Process § 40.161 What does the MRO do when a drug test specimen is rejected for testing?   As the MRO, when the laboratory reports that the specimen is rejected for testing (e.g., because of a fatal or uncorrected flaw), you...