Subpart A—Administrative Provisions4

Subpart B—Employer Responsibilities11

Subpart C—Specimen Collection Personnel4

Subpart D—Collection Sites, Forms, Equipment and Supplies Used in DOT Urine and Oral Fluid Collections10

Subpart E—Specimen Collections11

Subpart F—Drug Testing Laboratories18

Subpart G—Medical Review Officers and the Verification Process26

Subpart H—Split Specimen Tests9

Subpart I—Problems in Drug Tests12

Subpart J—Alcohol Testing Personnel3

Subpart K—Testing Sites, Forms, Equipment and Supplies Used in Alcohol Testing8

Subpart L—Alcohol Screening Tests4

Subpart M—Alcohol Confirmation Tests3

Subpart N—Problems in Alcohol Testing9

Subpart O—Substance Abuse Professionals and the Return-to-Duty Process16

Subpart P—Confidentiality and Release of Information7

Subpart Q—Roles and Responsibilities of Service Agents8

Subpart R—Public Interest Exclusions27