Action
Notice of proposed rulemaking.
Summary
The Department of Transportation is proposing to amend certain provisions of its drug and alcohol testing procedures to change instructions to laboratories, medical review officers, and employers with respect to adulterated, substituted, diluted, and invalid specimen results. These proposed changes are intended to create consistency with specimen validity requirements established by the U.S. Department of Health and Human Services and to modify some measures taken in two of our own interim final rules. This NPRM also proposes to make specimen validity testing mandatory within the regulated transportation industries.